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Finding the Fourth Proportional to 638,260.20, 880,794.72 and 351,780.48

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Solution

The fourth proportional to 638,260.20, 880,794.72 and 351,780.48 is: 485,454.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,260.20 : 880,794.72 = 351,780.48 : x
  2. Step 2: Convert to fraction form
    638,260.20/880,794.72 = 351,780.48/x
  3. Step 3: Cross multiply
    638,260.20x = 880,794.72 × 351,780.48
  4. Step 4: Simplify right side
    638,260.20x = 309,846,389,383.07
  5. Step 5: Solve for x
    x = 309,846,389,383.07/638,260.20
  6. Step 6: Final answer
    x = 485,454.66

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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.