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Finding the Fourth Proportional to 454,149.40, 626,679.12 and 279,692

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Solution

The fourth proportional to 454,149.40, 626,679.12 and 279,692 is: 385,945.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,149.40 : 626,679.12 = 279,692 : x
  2. Step 2: Convert to fraction form
    454,149.40/626,679.12 = 279,692/x
  3. Step 3: Cross multiply
    454,149.40x = 626,679.12 × 279,692
  4. Step 4: Simplify right side
    454,149.40x = 175,277,136,431.04
  5. Step 5: Solve for x
    x = 175,277,136,431.04/454,149.40
  6. Step 6: Final answer
    x = 385,945.98

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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.