Home / 781,310.55-1,177,821.89-729,230.39

Finding the Fourth Proportional to 781,310.55, 1,177,821.89 and 729,230.39

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Solution

The fourth proportional to 781,310.55, 1,177,821.89 and 729,230.39 is: 1,099,311.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,310.55 : 1,177,821.89 = 729,230.39 : x
  2. Step 2: Convert to fraction form
    781,310.55/1,177,821.89 = 729,230.39/x
  3. Step 3: Cross multiply
    781,310.55x = 1,177,821.89 × 729,230.39
  4. Step 4: Simplify right side
    781,310.55x = 858,903,506,659.98
  5. Step 5: Solve for x
    x = 858,903,506,659.98/781,310.55
  6. Step 6: Final answer
    x = 1,099,311.29

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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.