Home / 879,138.18-1,318,906.17-280,133.46

Finding the Fourth Proportional to 879,138.18, 1,318,906.17 and 280,133.46

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Solution

The fourth proportional to 879,138.18, 1,318,906.17 and 280,133.46 is: 420,263.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,138.18 : 1,318,906.17 = 280,133.46 : x
  2. Step 2: Convert to fraction form
    879,138.18/1,318,906.17 = 280,133.46/x
  3. Step 3: Cross multiply
    879,138.18x = 1,318,906.17 × 280,133.46
  4. Step 4: Simplify right side
    879,138.18x = 369,469,748,817.45
  5. Step 5: Solve for x
    x = 369,469,748,817.45/879,138.18
  6. Step 6: Final answer
    x = 420,263.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.