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Finding the Fourth Proportional to 521,104.35, 718,552.95 and 339,479.47

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Solution

The fourth proportional to 521,104.35, 718,552.95 and 339,479.47 is: 468,109.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,104.35 : 718,552.95 = 339,479.47 : x
  2. Step 2: Convert to fraction form
    521,104.35/718,552.95 = 339,479.47/x
  3. Step 3: Cross multiply
    521,104.35x = 718,552.95 × 339,479.47
  4. Step 4: Simplify right side
    521,104.35x = 243,933,969,342.77
  5. Step 5: Solve for x
    x = 243,933,969,342.77/521,104.35
  6. Step 6: Final answer
    x = 468,109.64

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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.