Home / 2,718,984.20-4,078,346.70-921,691.40

Finding the Fourth Proportional to 2,718,984.20, 4,078,346.70 and 921,691.40

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Solution

The fourth proportional to 2,718,984.20, 4,078,346.70 and 921,691.40 is: 1,382,493.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,718,984.20 : 4,078,346.70 = 921,691.40 : x
  2. Step 2: Convert to fraction form
    2,718,984.20/4,078,346.70 = 921,691.40/x
  3. Step 3: Cross multiply
    2,718,984.20x = 4,078,346.70 × 921,691.40
  4. Step 4: Simplify right side
    2,718,984.20x = 3,758,977,079,608.38
  5. Step 5: Solve for x
    x = 3,758,977,079,608.38/2,718,984.20
  6. Step 6: Final answer
    x = 1,382,493.17

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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.