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Finding the Fourth Proportional to 966,512.80, 1,450,114.80 and 405,719.20

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Solution

The fourth proportional to 966,512.80, 1,450,114.80 and 405,719.20 is: 608,723.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    966,512.80 : 1,450,114.80 = 405,719.20 : x
  2. Step 2: Convert to fraction form
    966,512.80/1,450,114.80 = 405,719.20/x
  3. Step 3: Cross multiply
    966,512.80x = 1,450,114.80 × 405,719.20
  4. Step 4: Simplify right side
    966,512.80x = 588,339,416,564.16
  5. Step 5: Solve for x
    x = 588,339,416,564.16/966,512.80
  6. Step 6: Final answer
    x = 608,723.87

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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.