Home / 1,276,387.80-1,912,832.10-1,040,191.80

Finding the Fourth Proportional to 1,276,387.80, 1,912,832.10 and 1,040,191.80

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Solution

The fourth proportional to 1,276,387.80, 1,912,832.10 and 1,040,191.80 is: 1,558,861.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,387.80 : 1,912,832.10 = 1,040,191.80 : x
  2. Step 2: Convert to fraction form
    1,276,387.80/1,912,832.10 = 1,040,191.80/x
  3. Step 3: Cross multiply
    1,276,387.80x = 1,912,832.10 × 1,040,191.80
  4. Step 4: Simplify right side
    1,276,387.80x = 1,989,712,265,196.78
  5. Step 5: Solve for x
    x = 1,989,712,265,196.78/1,276,387.80
  6. Step 6: Final answer
    x = 1,558,861.86

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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.