Home / 728,773.64-1,005,709.40-406,504.61

Finding the Fourth Proportional to 728,773.64, 1,005,709.40 and 406,504.61

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Solution

The fourth proportional to 728,773.64, 1,005,709.40 and 406,504.61 is: 560,977.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,773.64 : 1,005,709.40 = 406,504.61 : x
  2. Step 2: Convert to fraction form
    728,773.64/1,005,709.40 = 406,504.61/x
  3. Step 3: Cross multiply
    728,773.64x = 1,005,709.40 × 406,504.61
  4. Step 4: Simplify right side
    728,773.64x = 408,825,507,420.33
  5. Step 5: Solve for x
    x = 408,825,507,420.33/728,773.64
  6. Step 6: Final answer
    x = 560,977.35

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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.