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Finding the Fourth Proportional to 487,676.52, 672,722.64 and 283,704.48

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Solution

The fourth proportional to 487,676.52, 672,722.64 and 283,704.48 is: 391,354.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,676.52 : 672,722.64 = 283,704.48 : x
  2. Step 2: Convert to fraction form
    487,676.52/672,722.64 = 283,704.48/x
  3. Step 3: Cross multiply
    487,676.52x = 672,722.64 × 283,704.48
  4. Step 4: Simplify right side
    487,676.52x = 190,854,426,765.43
  5. Step 5: Solve for x
    x = 190,854,426,765.43/487,676.52
  6. Step 6: Final answer
    x = 391,354.55

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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.