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Finding the Fourth Proportional to 681,654.26, 940,337.18 and 520,229.06

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Solution

The fourth proportional to 681,654.26, 940,337.18 and 520,229.06 is: 717,652.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,654.26 : 940,337.18 = 520,229.06 : x
  2. Step 2: Convert to fraction form
    681,654.26/940,337.18 = 520,229.06/x
  3. Step 3: Cross multiply
    681,654.26x = 940,337.18 × 520,229.06
  4. Step 4: Simplify right side
    681,654.26x = 489,190,725,408.74
  5. Step 5: Solve for x
    x = 489,190,725,408.74/681,654.26
  6. Step 6: Final answer
    x = 717,652.26

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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.