Home / 657,790.20-987,074.10-479,849.40

Finding the Fourth Proportional to 657,790.20, 987,074.10 and 479,849.40

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Solution

The fourth proportional to 657,790.20, 987,074.10 and 479,849.40 is: 720,057.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,790.20 : 987,074.10 = 479,849.40 : x
  2. Step 2: Convert to fraction form
    657,790.20/987,074.10 = 479,849.40/x
  3. Step 3: Cross multiply
    657,790.20x = 987,074.10 × 479,849.40
  4. Step 4: Simplify right side
    657,790.20x = 473,646,914,640.54
  5. Step 5: Solve for x
    x = 473,646,914,640.54/657,790.20
  6. Step 6: Final answer
    x = 720,057.72

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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.