Home / 728,434.30-1,005,245.28-406,166.19

Finding the Fourth Proportional to 728,434.30, 1,005,245.28 and 406,166.19

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Solution

The fourth proportional to 728,434.30, 1,005,245.28 and 406,166.19 is: 560,512.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,434.30 : 1,005,245.28 = 406,166.19 : x
  2. Step 2: Convert to fraction form
    728,434.30/1,005,245.28 = 406,166.19/x
  3. Step 3: Cross multiply
    728,434.30x = 1,005,245.28 × 406,166.19
  4. Step 4: Simplify right side
    728,434.30x = 408,296,645,393.08
  5. Step 5: Solve for x
    x = 408,296,645,393.08/728,434.30
  6. Step 6: Final answer
    x = 560,512.66

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Double scale
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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.