Home / 728,442.80-1,005,129.24-406,082.24

Finding the Fourth Proportional to 728,442.80, 1,005,129.24 and 406,082.24

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Solution

The fourth proportional to 728,442.80, 1,005,129.24 and 406,082.24 is: 560,325.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,442.80 : 1,005,129.24 = 406,082.24 : x
  2. Step 2: Convert to fraction form
    728,442.80/1,005,129.24 = 406,082.24/x
  3. Step 3: Cross multiply
    728,442.80x = 1,005,129.24 × 406,082.24
  4. Step 4: Simplify right side
    728,442.80x = 408,165,133,268.70
  5. Step 5: Solve for x
    x = 408,165,133,268.70/728,442.80
  6. Step 6: Final answer
    x = 560,325.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.