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Finding the Fourth Proportional to 485,580.74, 728,820.32 and 245,863.13

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Solution

The fourth proportional to 485,580.74, 728,820.32 and 245,863.13 is: 369,022.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,580.74 : 728,820.32 = 245,863.13 : x
  2. Step 2: Convert to fraction form
    485,580.74/728,820.32 = 245,863.13/x
  3. Step 3: Cross multiply
    485,580.74x = 728,820.32 × 245,863.13
  4. Step 4: Simplify right side
    485,580.74x = 179,190,040,209.38
  5. Step 5: Solve for x
    x = 179,190,040,209.38/485,580.74
  6. Step 6: Final answer
    x = 369,022.14

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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.