Home / 638,456.61-881,076.15-351,986.95

Finding the Fourth Proportional to 638,456.61, 881,076.15 and 351,986.95

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Solution

The fourth proportional to 638,456.61, 881,076.15 and 351,986.95 is: 485,745.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,456.61 : 881,076.15 = 351,986.95 : x
  2. Step 2: Convert to fraction form
    638,456.61/881,076.15 = 351,986.95/x
  3. Step 3: Cross multiply
    638,456.61x = 881,076.15 × 351,986.95
  4. Step 4: Simplify right side
    638,456.61x = 310,127,307,857.59
  5. Step 5: Solve for x
    x = 310,127,307,857.59/638,456.61
  6. Step 6: Final answer
    x = 485,745.31

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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.