Home / 814,126.79-1,219,648.78-543,438.73

Finding the Fourth Proportional to 814,126.79, 1,219,648.78 and 543,438.73

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Solution

The fourth proportional to 814,126.79, 1,219,648.78 and 543,438.73 is: 814,129.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,126.79 : 1,219,648.78 = 543,438.73 : x
  2. Step 2: Convert to fraction form
    814,126.79/1,219,648.78 = 543,438.73/x
  3. Step 3: Cross multiply
    814,126.79x = 1,219,648.78 × 543,438.73
  4. Step 4: Simplify right side
    814,126.79x = 662,804,379,641.53
  5. Step 5: Solve for x
    x = 662,804,379,641.53/814,126.79
  6. Step 6: Final answer
    x = 814,129.18

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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.