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Finding the Fourth Proportional to 638,107.02, 880,606.53 and 351,645.48

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Solution

The fourth proportional to 638,107.02, 880,606.53 and 351,645.48 is: 485,281.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,107.02 : 880,606.53 = 351,645.48 : x
  2. Step 2: Convert to fraction form
    638,107.02/880,606.53 = 351,645.48/x
  3. Step 3: Cross multiply
    638,107.02x = 880,606.53 × 351,645.48
  4. Step 4: Simplify right side
    638,107.02x = 309,661,305,932.98
  5. Step 5: Solve for x
    x = 309,661,305,932.98/638,107.02
  6. Step 6: Final answer
    x = 485,281.15

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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.