Home / 657,850.20-987,164.10-479,909.40

Finding the Fourth Proportional to 657,850.20, 987,164.10 and 479,909.40

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Solution

The fourth proportional to 657,850.20, 987,164.10 and 479,909.40 is: 720,147.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,850.20 : 987,164.10 = 479,909.40 : x
  2. Step 2: Convert to fraction form
    657,850.20/987,164.10 = 479,909.40/x
  3. Step 3: Cross multiply
    657,850.20x = 987,164.10 × 479,909.40
  4. Step 4: Simplify right side
    657,850.20x = 473,749,330,932.54
  5. Step 5: Solve for x
    x = 473,749,330,932.54/657,850.20
  6. Step 6: Final answer
    x = 720,147.73

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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.