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Finding the Fourth Proportional to 521,860.68, 781,666.20 and 352,449.48

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Solution

The fourth proportional to 521,860.68, 781,666.20 and 352,449.48 is: 527,914.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,860.68 : 781,666.20 = 352,449.48 : x
  2. Step 2: Convert to fraction form
    521,860.68/781,666.20 = 352,449.48/x
  3. Step 3: Cross multiply
    521,860.68x = 781,666.20 × 352,449.48
  4. Step 4: Simplify right side
    521,860.68x = 275,497,845,723.58
  5. Step 5: Solve for x
    x = 275,497,845,723.58/521,860.68
  6. Step 6: Final answer
    x = 527,914.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.