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Finding the Fourth Proportional to 425,373.71, 587,057.09 and 317,756.90

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Solution

The fourth proportional to 425,373.71, 587,057.09 and 317,756.90 is: 438,535.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,373.71 : 587,057.09 = 317,756.90 : x
  2. Step 2: Convert to fraction form
    425,373.71/587,057.09 = 317,756.90/x
  3. Step 3: Cross multiply
    425,373.71x = 587,057.09 × 317,756.90
  4. Step 4: Simplify right side
    425,373.71x = 186,541,440,920.28
  5. Step 5: Solve for x
    x = 186,541,440,920.28/425,373.71
  6. Step 6: Final answer
    x = 438,535.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.