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Finding the Fourth Proportional to 667,603, 997,739.27 and 488,066.44

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Solution

The fourth proportional to 667,603, 997,739.27 and 488,066.44 is: 729,420.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,603 : 997,739.27 = 488,066.44 : x
  2. Step 2: Convert to fraction form
    667,603/997,739.27 = 488,066.44/x
  3. Step 3: Cross multiply
    667,603x = 997,739.27 × 488,066.44
  4. Step 4: Simplify right side
    667,603x = 486,963,053,557.10
  5. Step 5: Solve for x
    x = 486,963,053,557.10/667,603
  6. Step 6: Final answer
    x = 729,420.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.