Home / 638,132.76-880,581.57-351,652.77

Finding the Fourth Proportional to 638,132.76, 880,581.57 and 351,652.77

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Solution

The fourth proportional to 638,132.76, 880,581.57 and 351,652.77 is: 485,257.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,132.76 : 880,581.57 = 351,652.77 : x
  2. Step 2: Convert to fraction form
    638,132.76/880,581.57 = 351,652.77/x
  3. Step 3: Cross multiply
    638,132.76x = 880,581.57 × 351,652.77
  4. Step 4: Simplify right side
    638,132.76x = 309,658,948,301.45
  5. Step 5: Solve for x
    x = 309,658,948,301.45/638,132.76
  6. Step 6: Final answer
    x = 485,257.88

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Half scale
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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.