Home / 729,105.39-1,006,186.10-406,808.57

Finding the Fourth Proportional to 729,105.39, 1,006,186.10 and 406,808.57

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Solution

The fourth proportional to 729,105.39, 1,006,186.10 and 406,808.57 is: 561,407.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,105.39 : 1,006,186.10 = 406,808.57 : x
  2. Step 2: Convert to fraction form
    729,105.39/1,006,186.10 = 406,808.57/x
  3. Step 3: Cross multiply
    729,105.39x = 1,006,186.10 × 406,808.57
  4. Step 4: Simplify right side
    729,105.39x = 409,325,121,429.90
  5. Step 5: Solve for x
    x = 409,325,121,429.90/729,105.39
  6. Step 6: Final answer
    x = 561,407.35

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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.