Home / 781,125.28-1,077,885.84-454,498.72

Finding the Fourth Proportional to 781,125.28, 1,077,885.84 and 454,498.72

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Solution

The fourth proportional to 781,125.28, 1,077,885.84 and 454,498.72 is: 627,169.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,125.28 : 1,077,885.84 = 454,498.72 : x
  2. Step 2: Convert to fraction form
    781,125.28/1,077,885.84 = 454,498.72/x
  3. Step 3: Cross multiply
    781,125.28x = 1,077,885.84 × 454,498.72
  4. Step 4: Simplify right side
    781,125.28x = 489,897,734,586.13
  5. Step 5: Solve for x
    x = 489,897,734,586.13/781,125.28
  6. Step 6: Final answer
    x = 627,169.22

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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.