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Finding the Fourth Proportional to 635,980.40, 877,610.52 and 349,494.32

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Solution

The fourth proportional to 635,980.40, 877,610.52 and 349,494.32 is: 482,278.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,980.40 : 877,610.52 = 349,494.32 : x
  2. Step 2: Convert to fraction form
    635,980.40/877,610.52 = 349,494.32/x
  3. Step 3: Cross multiply
    635,980.40x = 877,610.52 × 349,494.32
  4. Step 4: Simplify right side
    635,980.40x = 306,719,891,912.25
  5. Step 5: Solve for x
    x = 306,719,891,912.25/635,980.40
  6. Step 6: Final answer
    x = 482,278.84

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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.