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Finding the Fourth Proportional to 684,402.54, 944,481.51 and 378,499.26

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Solution

The fourth proportional to 684,402.54, 944,481.51 and 378,499.26 is: 522,332.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,402.54 : 944,481.51 = 378,499.26 : x
  2. Step 2: Convert to fraction form
    684,402.54/944,481.51 = 378,499.26/x
  3. Step 3: Cross multiply
    684,402.54x = 944,481.51 × 378,499.26
  4. Step 4: Simplify right side
    684,402.54x = 357,485,552,618.68
  5. Step 5: Solve for x
    x = 357,485,552,618.68/684,402.54
  6. Step 6: Final answer
    x = 522,332.30

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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.