Home / 664,177,442.40-996,691,316.40-387,828,122.40

Finding the Fourth Proportional to 664,177,442.40, 996,691,316.40 and 387,828,122.40

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Solution

The fourth proportional to 664,177,442.40, 996,691,316.40 and 387,828,122.40 is: 581,990,439.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,177,442.40 : 996,691,316.40 = 387,828,122.40 : x
  2. Step 2: Convert to fraction form
    664,177,442.40/996,691,316.40 = 387,828,122.40/x
  3. Step 3: Cross multiply
    664,177,442.40x = 996,691,316.40 × 387,828,122.40
  4. Step 4: Simplify right side
    664,177,442.40x = 386,544,921,851,796,288
  5. Step 5: Solve for x
    x = 386,544,921,851,796,288/664,177,442.40
  6. Step 6: Final answer
    x = 581,990,439.87

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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.