Home / 851,284,005.80-1,276,422,123.90-443,137,317.80

Finding the Fourth Proportional to 851,284,005.80, 1,276,422,123.90 and 443,137,317.80

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Solution

The fourth proportional to 851,284,005.80, 1,276,422,123.90 and 443,137,317.80 is: 664,443,678.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,284,005.80 : 1,276,422,123.90 = 443,137,317.80 : x
  2. Step 2: Convert to fraction form
    851,284,005.80/1,276,422,123.90 = 443,137,317.80/x
  3. Step 3: Cross multiply
    851,284,005.80x = 1,276,422,123.90 × 443,137,317.80
  4. Step 4: Simplify right side
    851,284,005.80x = 565,630,276,365,625,344
  5. Step 5: Solve for x
    x = 565,630,276,365,625,344/851,284,005.80
  6. Step 6: Final answer
    x = 664,443,678.62

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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.