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Finding the Fourth Proportional to 698,761.76, 964,194 and 392,794.88

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Solution

The fourth proportional to 698,761.76, 964,194 and 392,794.88 is: 542,002.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,761.76 : 964,194 = 392,794.88 : x
  2. Step 2: Convert to fraction form
    698,761.76/964,194 = 392,794.88/x
  3. Step 3: Cross multiply
    698,761.76x = 964,194 × 392,794.88
  4. Step 4: Simplify right side
    698,761.76x = 378,730,466,526.72
  5. Step 5: Solve for x
    x = 378,730,466,526.72/698,761.76
  6. Step 6: Final answer
    x = 542,002.28

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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.