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Finding the Fourth Proportional to 398,656,123.20, 597,984,184.80 and 398,656,123.20

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Solution

The fourth proportional to 398,656,123.20, 597,984,184.80 and 398,656,123.20 is: 597,984,184.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,656,123.20 : 597,984,184.80 = 398,656,123.20 : x
  2. Step 2: Convert to fraction form
    398,656,123.20/597,984,184.80 = 398,656,123.20/x
  3. Step 3: Cross multiply
    398,656,123.20x = 597,984,184.80 × 398,656,123.20
  4. Step 4: Simplify right side
    398,656,123.20x = 238,390,056,847,280,352
  5. Step 5: Solve for x
    x = 238,390,056,847,280,352/398,656,123.20
  6. Step 6: Final answer
    x = 597,984,184.80

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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.