Home / 1,040,079.60-1,560,119.40-921,981.60

Finding the Fourth Proportional to 1,040,079.60, 1,560,119.40 and 921,981.60

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Solution

The fourth proportional to 1,040,079.60, 1,560,119.40 and 921,981.60 is: 1,382,972.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,079.60 : 1,560,119.40 = 921,981.60 : x
  2. Step 2: Convert to fraction form
    1,040,079.60/1,560,119.40 = 921,981.60/x
  3. Step 3: Cross multiply
    1,040,079.60x = 1,560,119.40 × 921,981.60
  4. Step 4: Simplify right side
    1,040,079.60x = 1,438,401,380,603.04
  5. Step 5: Solve for x
    x = 1,438,401,380,603.04/1,040,079.60
  6. Step 6: Final answer
    x = 1,382,972.40

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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.