Home / 781,278.71-1,177,773.90-729,198.53

Finding the Fourth Proportional to 781,278.71, 1,177,773.90 and 729,198.53

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Solution

The fourth proportional to 781,278.71, 1,177,773.90 and 729,198.53 is: 1,099,263.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,278.71 : 1,177,773.90 = 729,198.53 : x
  2. Step 2: Convert to fraction form
    781,278.71/1,177,773.90 = 729,198.53/x
  3. Step 3: Cross multiply
    781,278.71x = 1,177,773.90 × 729,198.53
  4. Step 4: Simplify right side
    781,278.71x = 858,830,995,430.93
  5. Step 5: Solve for x
    x = 858,830,995,430.93/781,278.71
  6. Step 6: Final answer
    x = 1,099,263.28

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.