Home / 728,781.06-1,005,715.27-406,490.93

Finding the Fourth Proportional to 728,781.06, 1,005,715.27 and 406,490.93

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Solution

The fourth proportional to 728,781.06, 1,005,715.27 and 406,490.93 is: 560,956.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,781.06 : 1,005,715.27 = 406,490.93 : x
  2. Step 2: Convert to fraction form
    728,781.06/1,005,715.27 = 406,490.93/x
  3. Step 3: Cross multiply
    728,781.06x = 1,005,715.27 × 406,490.93
  4. Step 4: Simplify right side
    728,781.06x = 408,814,135,417.50
  5. Step 5: Solve for x
    x = 408,814,135,417.50/728,781.06
  6. Step 6: Final answer
    x = 560,956.04

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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.