Home / 431,517,467.20-647,276,200.80-424,351,105.60

Finding the Fourth Proportional to 431,517,467.20, 647,276,200.80 and 424,351,105.60

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Solution

The fourth proportional to 431,517,467.20, 647,276,200.80 and 424,351,105.60 is: 636,526,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,517,467.20 : 647,276,200.80 = 424,351,105.60 : x
  2. Step 2: Convert to fraction form
    431,517,467.20/647,276,200.80 = 424,351,105.60/x
  3. Step 3: Cross multiply
    431,517,467.20x = 647,276,200.80 × 424,351,105.60
  4. Step 4: Simplify right side
    431,517,467.20x = 274,672,371,438,047,584
  5. Step 5: Solve for x
    x = 274,672,371,438,047,584/431,517,467.20
  6. Step 6: Final answer
    x = 636,526,658.40

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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.