Home / 680,003.10-1,020,004.65-280,511.10

Finding the Fourth Proportional to 680,003.10, 1,020,004.65 and 280,511.10

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Solution

The fourth proportional to 680,003.10, 1,020,004.65 and 280,511.10 is: 420,766.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,003.10 : 1,020,004.65 = 280,511.10 : x
  2. Step 2: Convert to fraction form
    680,003.10/1,020,004.65 = 280,511.10/x
  3. Step 3: Cross multiply
    680,003.10x = 1,020,004.65 × 280,511.10
  4. Step 4: Simplify right side
    680,003.10x = 286,122,626,376.62
  5. Step 5: Solve for x
    x = 286,122,626,376.62/680,003.10
  6. Step 6: Final answer
    x = 420,766.65

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Similar ratio
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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.