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Finding the Fourth Proportional to 635,382.87, 876,843.68 and 345,006.78

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Solution

The fourth proportional to 635,382.87, 876,843.68 and 345,006.78 is: 476,117.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,382.87 : 876,843.68 = 345,006.78 : x
  2. Step 2: Convert to fraction form
    635,382.87/876,843.68 = 345,006.78/x
  3. Step 3: Cross multiply
    635,382.87x = 876,843.68 × 345,006.78
  4. Step 4: Simplify right side
    635,382.87x = 302,517,012,875.12
  5. Step 5: Solve for x
    x = 302,517,012,875.12/635,382.87
  6. Step 6: Final answer
    x = 476,117.67

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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.