Home / 1,321,335.28-1,982,298.17-422,830.93

Finding the Fourth Proportional to 1,321,335.28, 1,982,298.17 and 422,830.93

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Solution

The fourth proportional to 1,321,335.28, 1,982,298.17 and 422,830.93 is: 634,340.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,335.28 : 1,982,298.17 = 422,830.93 : x
  2. Step 2: Convert to fraction form
    1,321,335.28/1,982,298.17 = 422,830.93/x
  3. Step 3: Cross multiply
    1,321,335.28x = 1,982,298.17 × 422,830.93
  4. Step 4: Simplify right side
    1,321,335.28x = 838,176,978,758.40
  5. Step 5: Solve for x
    x = 838,176,978,758.40/1,321,335.28
  6. Step 6: Final answer
    x = 634,340.88

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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.