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Finding the Fourth Proportional to 497,679.36, 686,791.68 and 271,326.72

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Solution

The fourth proportional to 497,679.36, 686,791.68 and 271,326.72 is: 374,427.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,679.36 : 686,791.68 = 271,326.72 : x
  2. Step 2: Convert to fraction form
    497,679.36/686,791.68 = 271,326.72/x
  3. Step 3: Cross multiply
    497,679.36x = 686,791.68 × 271,326.72
  4. Step 4: Simplify right side
    497,679.36x = 186,344,933,857.69
  5. Step 5: Solve for x
    x = 186,344,933,857.69/497,679.36
  6. Step 6: Final answer
    x = 374,427.69

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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.