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Finding the Fourth Proportional to 642,264.40, 962,230.20 and 392,654.80

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Solution

The fourth proportional to 642,264.40, 962,230.20 and 392,654.80 is: 588,269.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,264.40 : 962,230.20 = 392,654.80 : x
  2. Step 2: Convert to fraction form
    642,264.40/962,230.20 = 392,654.80/x
  3. Step 3: Cross multiply
    642,264.40x = 962,230.20 × 392,654.80
  4. Step 4: Simplify right side
    642,264.40x = 377,824,306,734.96
  5. Step 5: Solve for x
    x = 377,824,306,734.96/642,264.40
  6. Step 6: Final answer
    x = 588,269.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.