Home / 638,078.46-880,566.78-351,616.98

Finding the Fourth Proportional to 638,078.46, 880,566.78 and 351,616.98

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Solution

The fourth proportional to 638,078.46, 880,566.78 and 351,616.98 is: 485,241.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,078.46 : 880,566.78 = 351,616.98 : x
  2. Step 2: Convert to fraction form
    638,078.46/880,566.78 = 351,616.98/x
  3. Step 3: Cross multiply
    638,078.46x = 880,566.78 × 351,616.98
  4. Step 4: Simplify right side
    638,078.46x = 309,622,231,871.92
  5. Step 5: Solve for x
    x = 309,622,231,871.92/638,078.46
  6. Step 6: Final answer
    x = 485,241.63

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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.