Home / 1,040,138.20-1,560,207.30-977,152.60

Finding the Fourth Proportional to 1,040,138.20, 1,560,207.30 and 977,152.60

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Solution

The fourth proportional to 1,040,138.20, 1,560,207.30 and 977,152.60 is: 1,465,728.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,138.20 : 1,560,207.30 = 977,152.60 : x
  2. Step 2: Convert to fraction form
    1,040,138.20/1,560,207.30 = 977,152.60/x
  3. Step 3: Cross multiply
    1,040,138.20x = 1,560,207.30 × 977,152.60
  4. Step 4: Simplify right side
    1,040,138.20x = 1,524,560,619,733.98
  5. Step 5: Solve for x
    x = 1,524,560,619,733.98/1,040,138.20
  6. Step 6: Final answer
    x = 1,465,728.90

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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.