Home / 780,340.38-1,170,510.42-219,374.88

Finding the Fourth Proportional to 780,340.38, 1,170,510.42 and 219,374.88

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Solution

The fourth proportional to 780,340.38, 1,170,510.42 and 219,374.88 is: 329,062.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,340.38 : 1,170,510.42 = 219,374.88 : x
  2. Step 2: Convert to fraction form
    780,340.38/1,170,510.42 = 219,374.88/x
  3. Step 3: Cross multiply
    780,340.38x = 1,170,510.42 × 219,374.88
  4. Step 4: Simplify right side
    780,340.38x = 256,780,582,926.25
  5. Step 5: Solve for x
    x = 256,780,582,926.25/780,340.38
  6. Step 6: Final answer
    x = 329,062.28

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Similar ratio
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1.5x scale

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.