Home / 788,531,489.70-1,182,797,234.55-663,695,998.80

Finding the Fourth Proportional to 788,531,489.70, 1,182,797,234.55 and 663,695,998.80

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Solution

The fourth proportional to 788,531,489.70, 1,182,797,234.55 and 663,695,998.80 is: 995,543,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,531,489.70 : 1,182,797,234.55 = 663,695,998.80 : x
  2. Step 2: Convert to fraction form
    788,531,489.70/1,182,797,234.55 = 663,695,998.80/x
  3. Step 3: Cross multiply
    788,531,489.70x = 1,182,797,234.55 × 663,695,998.80
  4. Step 4: Simplify right side
    788,531,489.70x = 785,017,791,962,540,032
  5. Step 5: Solve for x
    x = 785,017,791,962,540,032/788,531,489.70
  6. Step 6: Final answer
    x = 995,543,998.20

Related Problems

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Half scale
Find fourth proportional to 1,577,062,979.40, 2,365,594,469.10 and 1,327,391,997.60
Double scale
Find fourth proportional to 788,531,490.70, 1,182,797,236.05 and 663,695,999.80
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.