Home / 1,187,487.80-1,781,231.70-1,145,497.40

Finding the Fourth Proportional to 1,187,487.80, 1,781,231.70 and 1,145,497.40

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Solution

The fourth proportional to 1,187,487.80, 1,781,231.70 and 1,145,497.40 is: 1,718,246.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,487.80 : 1,781,231.70 = 1,145,497.40 : x
  2. Step 2: Convert to fraction form
    1,187,487.80/1,781,231.70 = 1,145,497.40/x
  3. Step 3: Cross multiply
    1,187,487.80x = 1,781,231.70 × 1,145,497.40
  4. Step 4: Simplify right side
    1,187,487.80x = 2,040,396,281,147.58
  5. Step 5: Solve for x
    x = 2,040,396,281,147.58/1,187,487.80
  6. Step 6: Final answer
    x = 1,718,246.10

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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.