Home / 638,080.75-880,569.98-351,619.30

Finding the Fourth Proportional to 638,080.75, 880,569.98 and 351,619.30

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Solution

The fourth proportional to 638,080.75, 880,569.98 and 351,619.30 is: 485,244.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,080.75 : 880,569.98 = 351,619.30 : x
  2. Step 2: Convert to fraction form
    638,080.75/880,569.98 = 351,619.30/x
  3. Step 3: Cross multiply
    638,080.75x = 880,569.98 × 351,619.30
  4. Step 4: Simplify right side
    638,080.75x = 309,625,399,968.61
  5. Step 5: Solve for x
    x = 309,625,399,968.61/638,080.75
  6. Step 6: Final answer
    x = 485,244.85

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1.5x scale

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.