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Finding the Fourth Proportional to 638,449.14, 957,955.82 and 334,770.78

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Solution

The fourth proportional to 638,449.14, 957,955.82 and 334,770.78 is: 502,304.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,449.14 : 957,955.82 = 334,770.78 : x
  2. Step 2: Convert to fraction form
    638,449.14/957,955.82 = 334,770.78/x
  3. Step 3: Cross multiply
    638,449.14x = 957,955.82 × 334,770.78
  4. Step 4: Simplify right side
    638,449.14x = 320,695,615,393.09
  5. Step 5: Solve for x
    x = 320,695,615,393.09/638,449.14
  6. Step 6: Final answer
    x = 502,304.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.