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Finding the Fourth Proportional to 635,418.06, 877,001.14 and 393,808.02

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Solution

The fourth proportional to 635,418.06, 877,001.14 and 393,808.02 is: 543,532.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,418.06 : 877,001.14 = 393,808.02 : x
  2. Step 2: Convert to fraction form
    635,418.06/877,001.14 = 393,808.02/x
  3. Step 3: Cross multiply
    635,418.06x = 877,001.14 × 393,808.02
  4. Step 4: Simplify right side
    635,418.06x = 345,370,082,481.14
  5. Step 5: Solve for x
    x = 345,370,082,481.14/635,418.06
  6. Step 6: Final answer
    x = 543,532.05

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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.