Home / 785,491.20-1,178,329.10-280,124.04

Finding the Fourth Proportional to 785,491.20, 1,178,329.10 and 280,124.04

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Solution

The fourth proportional to 785,491.20, 1,178,329.10 and 280,124.04 is: 420,218.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,491.20 : 1,178,329.10 = 280,124.04 : x
  2. Step 2: Convert to fraction form
    785,491.20/1,178,329.10 = 280,124.04/x
  3. Step 3: Cross multiply
    785,491.20x = 1,178,329.10 × 280,124.04
  4. Step 4: Simplify right side
    785,491.20x = 330,078,306,540.94
  5. Step 5: Solve for x
    x = 330,078,306,540.94/785,491.20
  6. Step 6: Final answer
    x = 420,218.97

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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.