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Finding the Fourth Proportional to 671,709.60, 926,819.28 and 416,909.52

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Solution

The fourth proportional to 671,709.60, 926,819.28 and 416,909.52 is: 575,248.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,709.60 : 926,819.28 = 416,909.52 : x
  2. Step 2: Convert to fraction form
    671,709.60/926,819.28 = 416,909.52/x
  3. Step 3: Cross multiply
    671,709.60x = 926,819.28 × 416,909.52
  4. Step 4: Simplify right side
    671,709.60x = 386,399,781,151.55
  5. Step 5: Solve for x
    x = 386,399,781,151.55/671,709.60
  6. Step 6: Final answer
    x = 575,248.26

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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.