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Finding the Fourth Proportional to 487,548.68, 672,546.39 and 283,576.64

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Solution

The fourth proportional to 487,548.68, 672,546.39 and 283,576.64 is: 391,178.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,548.68 : 672,546.39 = 283,576.64 : x
  2. Step 2: Convert to fraction form
    487,548.68/672,546.39 = 283,576.64/x
  3. Step 3: Cross multiply
    487,548.68x = 672,546.39 × 283,576.64
  4. Step 4: Simplify right side
    487,548.68x = 190,718,445,520.33
  5. Step 5: Solve for x
    x = 190,718,445,520.33/487,548.68
  6. Step 6: Final answer
    x = 391,178.26

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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.