Home / 447,727.20-671,590.80-398,738.40

Finding the Fourth Proportional to 447,727.20, 671,590.80 and 398,738.40

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Solution

The fourth proportional to 447,727.20, 671,590.80 and 398,738.40 is: 598,107.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,727.20 : 671,590.80 = 398,738.40 : x
  2. Step 2: Convert to fraction form
    447,727.20/671,590.80 = 398,738.40/x
  3. Step 3: Cross multiply
    447,727.20x = 671,590.80 × 398,738.40
  4. Step 4: Simplify right side
    447,727.20x = 267,789,041,046.72
  5. Step 5: Solve for x
    x = 267,789,041,046.72/447,727.20
  6. Step 6: Final answer
    x = 598,107.60

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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.