Home / 728,329.82-1,005,095.77-406,033.46

Finding the Fourth Proportional to 728,329.82, 1,005,095.77 and 406,033.46

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Solution

The fourth proportional to 728,329.82, 1,005,095.77 and 406,033.46 is: 560,326.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,329.82 : 1,005,095.77 = 406,033.46 : x
  2. Step 2: Convert to fraction form
    728,329.82/1,005,095.77 = 406,033.46/x
  3. Step 3: Cross multiply
    728,329.82x = 1,005,095.77 × 406,033.46
  4. Step 4: Simplify right side
    728,329.82x = 408,102,508,098.99
  5. Step 5: Solve for x
    x = 408,102,508,098.99/728,329.82
  6. Step 6: Final answer
    x = 560,326.51

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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.