Home / 638,134.76-880,584.33-351,654.77

Finding the Fourth Proportional to 638,134.76, 880,584.33 and 351,654.77

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Solution

The fourth proportional to 638,134.76, 880,584.33 and 351,654.77 is: 485,260.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,134.76 : 880,584.33 = 351,654.77 : x
  2. Step 2: Convert to fraction form
    638,134.76/880,584.33 = 351,654.77/x
  3. Step 3: Cross multiply
    638,134.76x = 880,584.33 × 351,654.77
  4. Step 4: Simplify right side
    638,134.76x = 309,661,680,031.75
  5. Step 5: Solve for x
    x = 309,661,680,031.75/638,134.76
  6. Step 6: Final answer
    x = 485,260.64

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Double scale
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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.