Home / 1,187,451.20-1,781,176.80-713,892.80

Finding the Fourth Proportional to 1,187,451.20, 1,781,176.80 and 713,892.80

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Solution

The fourth proportional to 1,187,451.20, 1,781,176.80 and 713,892.80 is: 1,070,839.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,451.20 : 1,781,176.80 = 713,892.80 : x
  2. Step 2: Convert to fraction form
    1,187,451.20/1,781,176.80 = 713,892.80/x
  3. Step 3: Cross multiply
    1,187,451.20x = 1,781,176.80 × 713,892.80
  4. Step 4: Simplify right side
    1,187,451.20x = 1,271,569,293,047.04
  5. Step 5: Solve for x
    x = 1,271,569,293,047.04/1,187,451.20
  6. Step 6: Final answer
    x = 1,070,839.20

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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.