Home / 782,721.64-1,172,734.46-611,876.87

Finding the Fourth Proportional to 782,721.64, 1,172,734.46 and 611,876.87

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Solution

The fourth proportional to 782,721.64, 1,172,734.46 and 611,876.87 is: 916,761.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,721.64 : 1,172,734.46 = 611,876.87 : x
  2. Step 2: Convert to fraction form
    782,721.64/1,172,734.46 = 611,876.87/x
  3. Step 3: Cross multiply
    782,721.64x = 1,172,734.46 × 611,876.87
  4. Step 4: Simplify right side
    782,721.64x = 717,569,090,725.94
  5. Step 5: Solve for x
    x = 717,569,090,725.94/782,721.64
  6. Step 6: Final answer
    x = 916,761.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.