Home / 408,665,489.60-612,998,234.40-406,114,572.80

Finding the Fourth Proportional to 408,665,489.60, 612,998,234.40 and 406,114,572.80

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Solution

The fourth proportional to 408,665,489.60, 612,998,234.40 and 406,114,572.80 is: 609,171,859.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,665,489.60 : 612,998,234.40 = 406,114,572.80 : x
  2. Step 2: Convert to fraction form
    408,665,489.60/612,998,234.40 = 406,114,572.80/x
  3. Step 3: Cross multiply
    408,665,489.60x = 612,998,234.40 × 406,114,572.80
  4. Step 4: Simplify right side
    408,665,489.60x = 248,947,516,090,510,272
  5. Step 5: Solve for x
    x = 248,947,516,090,510,272/408,665,489.60
  6. Step 6: Final answer
    x = 609,171,859.20

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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.