Home / 1,040,154.20-1,557,120.90-978,637.40

Finding the Fourth Proportional to 1,040,154.20, 1,557,120.90 and 978,637.40

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Solution

The fourth proportional to 1,040,154.20, 1,557,120.90 and 978,637.40 is: 1,465,029.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,154.20 : 1,557,120.90 = 978,637.40 : x
  2. Step 2: Convert to fraction form
    1,040,154.20/1,557,120.90 = 978,637.40/x
  3. Step 3: Cross multiply
    1,040,154.20x = 1,557,120.90 × 978,637.40
  4. Step 4: Simplify right side
    1,040,154.20x = 1,523,856,749,061.66
  5. Step 5: Solve for x
    x = 1,523,856,749,061.66/1,040,154.20
  6. Step 6: Final answer
    x = 1,465,029.66

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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.