Home / 1,280,371.92-1,920,243.84-606,428.88

Finding the Fourth Proportional to 1,280,371.92, 1,920,243.84 and 606,428.88

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Solution

The fourth proportional to 1,280,371.92, 1,920,243.84 and 606,428.88 is: 909,494.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,371.92 : 1,920,243.84 = 606,428.88 : x
  2. Step 2: Convert to fraction form
    1,280,371.92/1,920,243.84 = 606,428.88/x
  3. Step 3: Cross multiply
    1,280,371.92x = 1,920,243.84 × 606,428.88
  4. Step 4: Simplify right side
    1,280,371.92x = 1,164,491,321,218.10
  5. Step 5: Solve for x
    x = 1,164,491,321,218.10/1,280,371.92
  6. Step 6: Final answer
    x = 909,494.58

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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.