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Finding the Fourth Proportional to 529,086.48, 730,148.78 and 299,691.14

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Solution

The fourth proportional to 529,086.48, 730,148.78 and 299,691.14 is: 413,579.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,086.48 : 730,148.78 = 299,691.14 : x
  2. Step 2: Convert to fraction form
    529,086.48/730,148.78 = 299,691.14/x
  3. Step 3: Cross multiply
    529,086.48x = 730,148.78 × 299,691.14
  4. Step 4: Simplify right side
    529,086.48x = 218,819,121,453.38
  5. Step 5: Solve for x
    x = 218,819,121,453.38/529,086.48
  6. Step 6: Final answer
    x = 413,579.12

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1.5x scale

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.