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Finding the Fourth Proportional to 698,633.06, 964,215.70 and 392,734.62

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Solution

The fourth proportional to 698,633.06, 964,215.70 and 392,734.62 is: 542,031.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,633.06 : 964,215.70 = 392,734.62 : x
  2. Step 2: Convert to fraction form
    698,633.06/964,215.70 = 392,734.62/x
  3. Step 3: Cross multiply
    698,633.06x = 964,215.70 × 392,734.62
  4. Step 4: Simplify right side
    698,633.06x = 378,680,885,555.70
  5. Step 5: Solve for x
    x = 378,680,885,555.70/698,633.06
  6. Step 6: Final answer
    x = 542,031.16

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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.