Home / 689,861,590.20-1,034,792,385.30-621,837,142.20

Finding the Fourth Proportional to 689,861,590.20, 1,034,792,385.30 and 621,837,142.20

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Solution

The fourth proportional to 689,861,590.20, 1,034,792,385.30 and 621,837,142.20 is: 932,755,713.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,861,590.20 : 1,034,792,385.30 = 621,837,142.20 : x
  2. Step 2: Convert to fraction form
    689,861,590.20/1,034,792,385.30 = 621,837,142.20/x
  3. Step 3: Cross multiply
    689,861,590.20x = 1,034,792,385.30 × 621,837,142.20
  4. Step 4: Simplify right side
    689,861,590.20x = 643,472,339,645,273,344
  5. Step 5: Solve for x
    x = 643,472,339,645,273,344/689,861,590.20
  6. Step 6: Final answer
    x = 932,755,713.30

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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.