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Finding the Fourth Proportional to 664,825.71, 995,649.17 and 383,490.03

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Solution

The fourth proportional to 664,825.71, 995,649.17 and 383,490.03 is: 574,318.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,825.71 : 995,649.17 = 383,490.03 : x
  2. Step 2: Convert to fraction form
    664,825.71/995,649.17 = 383,490.03/x
  3. Step 3: Cross multiply
    664,825.71x = 995,649.17 × 383,490.03
  4. Step 4: Simplify right side
    664,825.71x = 381,821,528,155.33
  5. Step 5: Solve for x
    x = 381,821,528,155.33/664,825.71
  6. Step 6: Final answer
    x = 574,318.23

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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.