Home / 728,379.10-1,005,167.37-406,109.26

Finding the Fourth Proportional to 728,379.10, 1,005,167.37 and 406,109.26

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Solution

The fourth proportional to 728,379.10, 1,005,167.37 and 406,109.26 is: 560,433.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,379.10 : 1,005,167.37 = 406,109.26 : x
  2. Step 2: Convert to fraction form
    728,379.10/1,005,167.37 = 406,109.26/x
  3. Step 3: Cross multiply
    728,379.10x = 1,005,167.37 × 406,109.26
  4. Step 4: Simplify right side
    728,379.10x = 408,207,776,806.85
  5. Step 5: Solve for x
    x = 408,207,776,806.85/728,379.10
  6. Step 6: Final answer
    x = 560,433.13

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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.