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Finding the Fourth Proportional to 482,662.78, 666,171.58 and 278,746.90

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Solution

The fourth proportional to 482,662.78, 666,171.58 and 278,746.90 is: 384,726.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,662.78 : 666,171.58 = 278,746.90 : x
  2. Step 2: Convert to fraction form
    482,662.78/666,171.58 = 278,746.90/x
  3. Step 3: Cross multiply
    482,662.78x = 666,171.58 × 278,746.90
  4. Step 4: Simplify right side
    482,662.78x = 185,693,262,793.10
  5. Step 5: Solve for x
    x = 185,693,262,793.10/482,662.78
  6. Step 6: Final answer
    x = 384,726.71

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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.