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Finding the Fourth Proportional to 495,983.94, 679,999.82 and 487,015.88

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Solution

The fourth proportional to 495,983.94, 679,999.82 and 487,015.88 is: 667,704.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,983.94 : 679,999.82 = 487,015.88 : x
  2. Step 2: Convert to fraction form
    495,983.94/679,999.82 = 487,015.88/x
  3. Step 3: Cross multiply
    495,983.94x = 679,999.82 × 487,015.88
  4. Step 4: Simplify right side
    495,983.94x = 331,170,704,902.06
  5. Step 5: Solve for x
    x = 331,170,704,902.06/495,983.94
  6. Step 6: Final answer
    x = 667,704.49

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.