Home / 1,287,155.15-1,930,744.34-327,611.78

Finding the Fourth Proportional to 1,287,155.15, 1,930,744.34 and 327,611.78

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Solution

The fourth proportional to 1,287,155.15, 1,930,744.34 and 327,611.78 is: 491,420.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,155.15 : 1,930,744.34 = 327,611.78 : x
  2. Step 2: Convert to fraction form
    1,287,155.15/1,930,744.34 = 327,611.78/x
  3. Step 3: Cross multiply
    1,287,155.15x = 1,930,744.34 × 327,611.78
  4. Step 4: Simplify right side
    1,287,155.15x = 632,534,578,660.55
  5. Step 5: Solve for x
    x = 632,534,578,660.55/1,287,155.15
  6. Step 6: Final answer
    x = 491,420.62

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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.