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Finding the Fourth Proportional to 658,278.40, 986,737.20 and 358,124.80

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Solution

The fourth proportional to 658,278.40, 986,737.20 and 358,124.80 is: 536,817.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,278.40 : 986,737.20 = 358,124.80 : x
  2. Step 2: Convert to fraction form
    658,278.40/986,737.20 = 358,124.80/x
  3. Step 3: Cross multiply
    658,278.40x = 986,737.20 × 358,124.80
  4. Step 4: Simplify right side
    658,278.40x = 353,375,062,402.56
  5. Step 5: Solve for x
    x = 353,375,062,402.56/658,278.40
  6. Step 6: Final answer
    x = 536,817.04

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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.