Home / 1,540,443.80-2,125,910.50-861,380.12

Finding the Fourth Proportional to 1,540,443.80, 2,125,910.50 and 861,380.12

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Solution

The fourth proportional to 1,540,443.80, 2,125,910.50 and 861,380.12 is: 1,188,759.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540,443.80 : 2,125,910.50 = 861,380.12 : x
  2. Step 2: Convert to fraction form
    1,540,443.80/2,125,910.50 = 861,380.12/x
  3. Step 3: Cross multiply
    1,540,443.80x = 2,125,910.50 × 861,380.12
  4. Step 4: Simplify right side
    1,540,443.80x = 1,831,217,041,599.26
  5. Step 5: Solve for x
    x = 1,831,217,041,599.26/1,540,443.80
  6. Step 6: Final answer
    x = 1,188,759.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.