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Finding the Fourth Proportional to 636,822.10, 878,940.11 and 365,072.47

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Solution

The fourth proportional to 636,822.10, 878,940.11 and 365,072.47 is: 503,872.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,822.10 : 878,940.11 = 365,072.47 : x
  2. Step 2: Convert to fraction form
    636,822.10/878,940.11 = 365,072.47/x
  3. Step 3: Cross multiply
    636,822.10x = 878,940.11 × 365,072.47
  4. Step 4: Simplify right side
    636,822.10x = 320,876,835,655.10
  5. Step 5: Solve for x
    x = 320,876,835,655.10/636,822.10
  6. Step 6: Final answer
    x = 503,872.02

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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.