Home / 680,261.76-1,020,039.60-200,427.28

Finding the Fourth Proportional to 680,261.76, 1,020,039.60 and 200,427.28

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Solution

The fourth proportional to 680,261.76, 1,020,039.60 and 200,427.28 is: 300,536.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,261.76 : 1,020,039.60 = 200,427.28 : x
  2. Step 2: Convert to fraction form
    680,261.76/1,020,039.60 = 200,427.28/x
  3. Step 3: Cross multiply
    680,261.76x = 1,020,039.60 × 200,427.28
  4. Step 4: Simplify right side
    680,261.76x = 204,443,762,520.29
  5. Step 5: Solve for x
    x = 204,443,762,520.29/680,261.76
  6. Step 6: Final answer
    x = 300,536.90

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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.