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Finding the Fourth Proportional to 424,271.70, 636,407.55 and 329,793.30

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Solution

The fourth proportional to 424,271.70, 636,407.55 and 329,793.30 is: 494,689.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,271.70 : 636,407.55 = 329,793.30 : x
  2. Step 2: Convert to fraction form
    424,271.70/636,407.55 = 329,793.30/x
  3. Step 3: Cross multiply
    424,271.70x = 636,407.55 × 329,793.30
  4. Step 4: Simplify right side
    424,271.70x = 209,882,946,059.42
  5. Step 5: Solve for x
    x = 209,882,946,059.42/424,271.70
  6. Step 6: Final answer
    x = 494,689.95

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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.