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Finding the Fourth Proportional to 539,613.12, 744,668.92 and 297,891.28

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Solution

The fourth proportional to 539,613.12, 744,668.92 and 297,891.28 is: 411,091.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,613.12 : 744,668.92 = 297,891.28 : x
  2. Step 2: Convert to fraction form
    539,613.12/744,668.92 = 297,891.28/x
  3. Step 3: Cross multiply
    539,613.12x = 744,668.92 × 297,891.28
  4. Step 4: Simplify right side
    539,613.12x = 221,830,377,755.02
  5. Step 5: Solve for x
    x = 221,830,377,755.02/539,613.12
  6. Step 6: Final answer
    x = 411,091.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.