Home / 780,074.40-1,170,331.92-219,113.76

Finding the Fourth Proportional to 780,074.40, 1,170,331.92 and 219,113.76

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Solution

The fourth proportional to 780,074.40, 1,170,331.92 and 219,113.76 is: 328,732.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,074.40 : 1,170,331.92 = 219,113.76 : x
  2. Step 2: Convert to fraction form
    780,074.40/1,170,331.92 = 219,113.76/x
  3. Step 3: Cross multiply
    780,074.40x = 1,170,331.92 × 219,113.76
  4. Step 4: Simplify right side
    780,074.40x = 256,435,827,439.22
  5. Step 5: Solve for x
    x = 256,435,827,439.22/780,074.40
  6. Step 6: Final answer
    x = 328,732.53

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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.