Home / 638,002.38-880,442.58-351,522.39

Finding the Fourth Proportional to 638,002.38, 880,442.58 and 351,522.39

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Solution

The fourth proportional to 638,002.38, 880,442.58 and 351,522.39 is: 485,100.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,002.38 : 880,442.58 = 351,522.39 : x
  2. Step 2: Convert to fraction form
    638,002.38/880,442.58 = 351,522.39/x
  3. Step 3: Cross multiply
    638,002.38x = 880,442.58 × 351,522.39
  4. Step 4: Simplify right side
    638,002.38x = 309,495,279,979.37
  5. Step 5: Solve for x
    x = 309,495,279,979.37/638,002.38
  6. Step 6: Final answer
    x = 485,100.51

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Double scale
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Similar ratio
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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.