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Finding the Fourth Proportional to 521,104.77, 718,553.54 and 339,479.90

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Solution

The fourth proportional to 521,104.77, 718,553.54 and 339,479.90 is: 468,110.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,104.77 : 718,553.54 = 339,479.90 : x
  2. Step 2: Convert to fraction form
    521,104.77/718,553.54 = 339,479.90/x
  3. Step 3: Cross multiply
    521,104.77x = 718,553.54 × 339,479.90
  4. Step 4: Simplify right side
    521,104.77x = 243,934,478,613.68
  5. Step 5: Solve for x
    x = 243,934,478,613.68/521,104.77
  6. Step 6: Final answer
    x = 468,110.24

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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.