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Finding the Fourth Proportional to 1,788,691.80, 2,680,964.10 and 723,034.20

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Solution

The fourth proportional to 1,788,691.80, 2,680,964.10 and 723,034.20 is: 1,083,713.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788,691.80 : 2,680,964.10 = 723,034.20 : x
  2. Step 2: Convert to fraction form
    1,788,691.80/2,680,964.10 = 723,034.20/x
  3. Step 3: Cross multiply
    1,788,691.80x = 2,680,964.10 × 723,034.20
  4. Step 4: Simplify right side
    1,788,691.80x = 1,938,428,733,272.22
  5. Step 5: Solve for x
    x = 1,938,428,733,272.22/1,788,691.80
  6. Step 6: Final answer
    x = 1,083,713.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.