Home / 1,386,643.20-2,079,964.80-787,372.80

Finding the Fourth Proportional to 1,386,643.20, 2,079,964.80 and 787,372.80

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Solution

The fourth proportional to 1,386,643.20, 2,079,964.80 and 787,372.80 is: 1,181,059.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,643.20 : 2,079,964.80 = 787,372.80 : x
  2. Step 2: Convert to fraction form
    1,386,643.20/2,079,964.80 = 787,372.80/x
  3. Step 3: Cross multiply
    1,386,643.20x = 2,079,964.80 × 787,372.80
  4. Step 4: Simplify right side
    1,386,643.20x = 1,637,707,708,477.44
  5. Step 5: Solve for x
    x = 1,637,707,708,477.44/1,386,643.20
  6. Step 6: Final answer
    x = 1,181,059.20

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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.