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Finding the Fourth Proportional to 638,314.18, 880,863.05 and 351,860.92

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Solution

The fourth proportional to 638,314.18, 880,863.05 and 351,860.92 is: 485,562.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,314.18 : 880,863.05 = 351,860.92 : x
  2. Step 2: Convert to fraction form
    638,314.18/880,863.05 = 351,860.92/x
  3. Step 3: Cross multiply
    638,314.18x = 880,863.05 × 351,860.92
  4. Step 4: Simplify right side
    638,314.18x = 309,941,283,167.01
  5. Step 5: Solve for x
    x = 309,941,283,167.01/638,314.18
  6. Step 6: Final answer
    x = 485,562.27

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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.