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Finding the Fourth Proportional to 398,604,407.40, 597,906,611.10 and 383,298,906.60

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Solution

The fourth proportional to 398,604,407.40, 597,906,611.10 and 383,298,906.60 is: 574,948,359.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,604,407.40 : 597,906,611.10 = 383,298,906.60 : x
  2. Step 2: Convert to fraction form
    398,604,407.40/597,906,611.10 = 383,298,906.60/x
  3. Step 3: Cross multiply
    398,604,407.40x = 597,906,611.10 × 383,298,906.60
  4. Step 4: Simplify right side
    398,604,407.40x = 229,176,950,283,541,440
  5. Step 5: Solve for x
    x = 229,176,950,283,541,440/398,604,407.40
  6. Step 6: Final answer
    x = 574,948,359.90

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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.