Home / 447,712.20-671,568.30-398,723.40

Finding the Fourth Proportional to 447,712.20, 671,568.30 and 398,723.40

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Solution

The fourth proportional to 447,712.20, 671,568.30 and 398,723.40 is: 598,085.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,712.20 : 671,568.30 = 398,723.40 : x
  2. Step 2: Convert to fraction form
    447,712.20/671,568.30 = 398,723.40/x
  3. Step 3: Cross multiply
    447,712.20x = 671,568.30 × 398,723.40
  4. Step 4: Simplify right side
    447,712.20x = 267,769,995,908.22
  5. Step 5: Solve for x
    x = 267,769,995,908.22/447,712.20
  6. Step 6: Final answer
    x = 598,085.10

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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.