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Finding the Fourth Proportional to 692,318.72, 955,251.56 and 520,420.52

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Solution

The fourth proportional to 692,318.72, 955,251.56 and 520,420.52 is: 718,068.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,318.72 : 955,251.56 = 520,420.52 : x
  2. Step 2: Convert to fraction form
    692,318.72/955,251.56 = 520,420.52/x
  3. Step 3: Cross multiply
    692,318.72x = 955,251.56 × 520,420.52
  4. Step 4: Simplify right side
    692,318.72x = 497,132,513,586.01
  5. Step 5: Solve for x
    x = 497,132,513,586.01/692,318.72
  6. Step 6: Final answer
    x = 718,068.86

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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.