Home / 728,884.18-1,005,860.46-406,593.28

Finding the Fourth Proportional to 728,884.18, 1,005,860.46 and 406,593.28

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Solution

The fourth proportional to 728,884.18, 1,005,860.46 and 406,593.28 is: 561,098.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,884.18 : 1,005,860.46 = 406,593.28 : x
  2. Step 2: Convert to fraction form
    728,884.18/1,005,860.46 = 406,593.28/x
  3. Step 3: Cross multiply
    728,884.18x = 1,005,860.46 × 406,593.28
  4. Step 4: Simplify right side
    728,884.18x = 408,976,103,653.71
  5. Step 5: Solve for x
    x = 408,976,103,653.71/728,884.18
  6. Step 6: Final answer
    x = 561,098.89

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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.