Home / 781,353.88-1,078,073.92-454,720.48

Finding the Fourth Proportional to 781,353.88, 1,078,073.92 and 454,720.48

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Solution

The fourth proportional to 781,353.88, 1,078,073.92 and 454,720.48 is: 627,401.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,353.88 : 1,078,073.92 = 454,720.48 : x
  2. Step 2: Convert to fraction form
    781,353.88/1,078,073.92 = 454,720.48/x
  3. Step 3: Cross multiply
    781,353.88x = 1,078,073.92 × 454,720.48
  4. Step 4: Simplify right side
    781,353.88x = 490,222,290,377.88
  5. Step 5: Solve for x
    x = 490,222,290,377.88/781,353.88
  6. Step 6: Final answer
    x = 627,401.11

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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.