Home / 781,126.28-1,077,887.22-454,499.72

Finding the Fourth Proportional to 781,126.28, 1,077,887.22 and 454,499.72

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Solution

The fourth proportional to 781,126.28, 1,077,887.22 and 454,499.72 is: 627,170.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,126.28 : 1,077,887.22 = 454,499.72 : x
  2. Step 2: Convert to fraction form
    781,126.28/1,077,887.22 = 454,499.72/x
  3. Step 3: Cross multiply
    781,126.28x = 1,077,887.22 × 454,499.72
  4. Step 4: Simplify right side
    781,126.28x = 489,899,439,681.58
  5. Step 5: Solve for x
    x = 489,899,439,681.58/781,126.28
  6. Step 6: Final answer
    x = 627,170.60

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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.