Home / 1,020,020,687.20-1,530,031,030.80-611,873,999.20

Finding the Fourth Proportional to 1,020,020,687.20, 1,530,031,030.80 and 611,873,999.20

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Solution

The fourth proportional to 1,020,020,687.20, 1,530,031,030.80 and 611,873,999.20 is: 917,810,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,020,687.20 : 1,530,031,030.80 = 611,873,999.20 : x
  2. Step 2: Convert to fraction form
    1,020,020,687.20/1,530,031,030.80 = 611,873,999.20/x
  3. Step 3: Cross multiply
    1,020,020,687.20x = 1,530,031,030.80 × 611,873,999.20
  4. Step 4: Simplify right side
    1,020,020,687.20x = 936,186,205,715,694,464
  5. Step 5: Solve for x
    x = 936,186,205,715,694,464/1,020,020,687.20
  6. Step 6: Final answer
    x = 917,810,998.80

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Half scale
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Double scale
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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.