Home / 814,062.72-1,220,787.36-340,780.80

Finding the Fourth Proportional to 814,062.72, 1,220,787.36 and 340,780.80

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Solution

The fourth proportional to 814,062.72, 1,220,787.36 and 340,780.80 is: 511,042.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,062.72 : 1,220,787.36 = 340,780.80 : x
  2. Step 2: Convert to fraction form
    814,062.72/1,220,787.36 = 340,780.80/x
  3. Step 3: Cross multiply
    814,062.72x = 1,220,787.36 × 340,780.80
  4. Step 4: Simplify right side
    814,062.72x = 416,020,893,170.69
  5. Step 5: Solve for x
    x = 416,020,893,170.69/814,062.72
  6. Step 6: Final answer
    x = 511,042.80

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Double scale
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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.