Home / 1,040,131.40-1,560,197.10-919,862.60

Finding the Fourth Proportional to 1,040,131.40, 1,560,197.10 and 919,862.60

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Solution

The fourth proportional to 1,040,131.40, 1,560,197.10 and 919,862.60 is: 1,379,793.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,131.40 : 1,560,197.10 = 919,862.60 : x
  2. Step 2: Convert to fraction form
    1,040,131.40/1,560,197.10 = 919,862.60/x
  3. Step 3: Cross multiply
    1,040,131.40x = 1,560,197.10 × 919,862.60
  4. Step 4: Simplify right side
    1,040,131.40x = 1,435,166,960,918.46
  5. Step 5: Solve for x
    x = 1,435,166,960,918.46/1,040,131.40
  6. Step 6: Final answer
    x = 1,379,793.90

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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.