Home / 2,642,428.80-3,963,643.20-1,380,643.20

Finding the Fourth Proportional to 2,642,428.80, 3,963,643.20 and 1,380,643.20

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Solution

The fourth proportional to 2,642,428.80, 3,963,643.20 and 1,380,643.20 is: 2,070,964.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642,428.80 : 3,963,643.20 = 1,380,643.20 : x
  2. Step 2: Convert to fraction form
    2,642,428.80/3,963,643.20 = 1,380,643.20/x
  3. Step 3: Cross multiply
    2,642,428.80x = 3,963,643.20 × 1,380,643.20
  4. Step 4: Simplify right side
    2,642,428.80x = 5,472,377,031,306.24
  5. Step 5: Solve for x
    x = 5,472,377,031,306.24/2,642,428.80
  6. Step 6: Final answer
    x = 2,070,964.80

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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.