Home / 813,693.44-1,220,240.64-281,077.76

Finding the Fourth Proportional to 813,693.44, 1,220,240.64 and 281,077.76

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Solution

The fourth proportional to 813,693.44, 1,220,240.64 and 281,077.76 is: 421,513.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,693.44 : 1,220,240.64 = 281,077.76 : x
  2. Step 2: Convert to fraction form
    813,693.44/1,220,240.64 = 281,077.76/x
  3. Step 3: Cross multiply
    813,693.44x = 1,220,240.64 × 281,077.76
  4. Step 4: Simplify right side
    813,693.44x = 342,982,505,752.17
  5. Step 5: Solve for x
    x = 342,982,505,752.17/813,693.44
  6. Step 6: Final answer
    x = 421,513.18

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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.