Home / 728,619.44-1,005,492.88-406,329.92

Finding the Fourth Proportional to 728,619.44, 1,005,492.88 and 406,329.92

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Solution

The fourth proportional to 728,619.44, 1,005,492.88 and 406,329.92 is: 560,734.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,619.44 : 1,005,492.88 = 406,329.92 : x
  2. Step 2: Convert to fraction form
    728,619.44/1,005,492.88 = 406,329.92/x
  3. Step 3: Cross multiply
    728,619.44x = 1,005,492.88 × 406,329.92
  4. Step 4: Simplify right side
    728,619.44x = 408,561,841,490.97
  5. Step 5: Solve for x
    x = 408,561,841,490.97/728,619.44
  6. Step 6: Final answer
    x = 560,734.20

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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.