Home / 728,619.46-1,005,492.90-406,329.91

Finding the Fourth Proportional to 728,619.46, 1,005,492.90 and 406,329.91

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Solution

The fourth proportional to 728,619.46, 1,005,492.90 and 406,329.91 is: 560,734.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,619.46 : 1,005,492.90 = 406,329.91 : x
  2. Step 2: Convert to fraction form
    728,619.46/1,005,492.90 = 406,329.91/x
  3. Step 3: Cross multiply
    728,619.46x = 1,005,492.90 × 406,329.91
  4. Step 4: Simplify right side
    728,619.46x = 408,561,839,562.64
  5. Step 5: Solve for x
    x = 408,561,839,562.64/728,619.46
  6. Step 6: Final answer
    x = 560,734.19

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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.