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Finding the Fourth Proportional to 522,477.52, 721,097.76 and 318,646.72

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Solution

The fourth proportional to 522,477.52, 721,097.76 and 318,646.72 is: 439,780.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,477.52 : 721,097.76 = 318,646.72 : x
  2. Step 2: Convert to fraction form
    522,477.52/721,097.76 = 318,646.72/x
  3. Step 3: Cross multiply
    522,477.52x = 721,097.76 × 318,646.72
  4. Step 4: Simplify right side
    522,477.52x = 229,775,436,023.35
  5. Step 5: Solve for x
    x = 229,775,436,023.35/522,477.52
  6. Step 6: Final answer
    x = 439,780.52

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Similar ratio
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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.