Home / 782,720.64-1,172,732.96-611,875.87

Finding the Fourth Proportional to 782,720.64, 1,172,732.96 and 611,875.87

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Solution

The fourth proportional to 782,720.64, 1,172,732.96 and 611,875.87 is: 916,760.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,720.64 : 1,172,732.96 = 611,875.87 : x
  2. Step 2: Convert to fraction form
    782,720.64/1,172,732.96 = 611,875.87/x
  3. Step 3: Cross multiply
    782,720.64x = 1,172,732.96 × 611,875.87
  4. Step 4: Simplify right side
    782,720.64x = 717,566,999,940.68
  5. Step 5: Solve for x
    x = 717,566,999,940.68/782,720.64
  6. Step 6: Final answer
    x = 916,760.04

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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.