Home / 1,187,713.80-1,781,570.70-1,040,257.80

Finding the Fourth Proportional to 1,187,713.80, 1,781,570.70 and 1,040,257.80

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Solution

The fourth proportional to 1,187,713.80, 1,781,570.70 and 1,040,257.80 is: 1,560,386.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,713.80 : 1,781,570.70 = 1,040,257.80 : x
  2. Step 2: Convert to fraction form
    1,187,713.80/1,781,570.70 = 1,040,257.80/x
  3. Step 3: Cross multiply
    1,187,713.80x = 1,781,570.70 × 1,040,257.80
  4. Step 4: Simplify right side
    1,187,713.80x = 1,853,292,816,926.46
  5. Step 5: Solve for x
    x = 1,853,292,816,926.46/1,187,713.80
  6. Step 6: Final answer
    x = 1,560,386.70

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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.