Home / 728,763.20-1,005,694.98-406,494.17

Finding the Fourth Proportional to 728,763.20, 1,005,694.98 and 406,494.17

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Solution

The fourth proportional to 728,763.20, 1,005,694.98 and 406,494.17 is: 560,962.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,763.20 : 1,005,694.98 = 406,494.17 : x
  2. Step 2: Convert to fraction form
    728,763.20/1,005,694.98 = 406,494.17/x
  3. Step 3: Cross multiply
    728,763.20x = 1,005,694.98 × 406,494.17
  4. Step 4: Simplify right side
    728,763.20x = 408,809,148,682.50
  5. Step 5: Solve for x
    x = 408,809,148,682.50/728,763.20
  6. Step 6: Final answer
    x = 560,962.94

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1.5x scale

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.