Home / 782,082.60-1,172,285.28-512,108.16

Finding the Fourth Proportional to 782,082.60, 1,172,285.28 and 512,108.16

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Solution

The fourth proportional to 782,082.60, 1,172,285.28 and 512,108.16 is: 767,613.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,082.60 : 1,172,285.28 = 512,108.16 : x
  2. Step 2: Convert to fraction form
    782,082.60/1,172,285.28 = 512,108.16/x
  3. Step 3: Cross multiply
    782,082.60x = 1,172,285.28 × 512,108.16
  4. Step 4: Simplify right side
    782,082.60x = 600,336,857,735.89
  5. Step 5: Solve for x
    x = 600,336,857,735.89/782,082.60
  6. Step 6: Final answer
    x = 767,613.11

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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.