Home / 425,434.20-636,839.10-247,412.40

Finding the Fourth Proportional to 425,434.20, 636,839.10 and 247,412.40

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Solution

The fourth proportional to 425,434.20, 636,839.10 and 247,412.40 is: 370,355.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,434.20 : 636,839.10 = 247,412.40 : x
  2. Step 2: Convert to fraction form
    425,434.20/636,839.10 = 247,412.40/x
  3. Step 3: Cross multiply
    425,434.20x = 636,839.10 × 247,412.40
  4. Step 4: Simplify right side
    425,434.20x = 157,561,890,144.84
  5. Step 5: Solve for x
    x = 157,561,890,144.84/425,434.20
  6. Step 6: Final answer
    x = 370,355.49

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1.5x scale

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.