Home / 485,810.31-670,414.48-268,028.16

Finding the Fourth Proportional to 485,810.31, 670,414.48 and 268,028.16

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Solution

The fourth proportional to 485,810.31, 670,414.48 and 268,028.16 is: 369,876.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,810.31 : 670,414.48 = 268,028.16 : x
  2. Step 2: Convert to fraction form
    485,810.31/670,414.48 = 268,028.16/x
  3. Step 3: Cross multiply
    485,810.31x = 670,414.48 × 268,028.16
  4. Step 4: Simplify right side
    485,810.31x = 179,689,959,511.76
  5. Step 5: Solve for x
    x = 179,689,959,511.76/485,810.31
  6. Step 6: Final answer
    x = 369,876.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.