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Finding the Fourth Proportional to 636,840.92, 878,966 and 365,091.24

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Solution

The fourth proportional to 636,840.92, 878,966 and 365,091.24 is: 503,897.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,840.92 : 878,966 = 365,091.24 : x
  2. Step 2: Convert to fraction form
    636,840.92/878,966 = 365,091.24/x
  3. Step 3: Cross multiply
    636,840.92x = 878,966 × 365,091.24
  4. Step 4: Simplify right side
    636,840.92x = 320,902,786,857.84
  5. Step 5: Solve for x
    x = 320,902,786,857.84/636,840.92
  6. Step 6: Final answer
    x = 503,897.88

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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.