Home / 2,129,403.20-3,192,938.40-865,803.20

Finding the Fourth Proportional to 2,129,403.20, 3,192,938.40 and 865,803.20

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Solution

The fourth proportional to 2,129,403.20, 3,192,938.40 and 865,803.20 is: 1,298,230.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129,403.20 : 3,192,938.40 = 865,803.20 : x
  2. Step 2: Convert to fraction form
    2,129,403.20/3,192,938.40 = 865,803.20/x
  3. Step 3: Cross multiply
    2,129,403.20x = 3,192,938.40 × 865,803.20
  4. Step 4: Simplify right side
    2,129,403.20x = 2,764,456,284,122.88
  5. Step 5: Solve for x
    x = 2,764,456,284,122.88/2,129,403.20
  6. Step 6: Final answer
    x = 1,298,230.55

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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.