Home / 879,170.16-1,318,682.28-280,107.12

Finding the Fourth Proportional to 879,170.16, 1,318,682.28 and 280,107.12

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Solution

The fourth proportional to 879,170.16, 1,318,682.28 and 280,107.12 is: 420,137.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,170.16 : 1,318,682.28 = 280,107.12 : x
  2. Step 2: Convert to fraction form
    879,170.16/1,318,682.28 = 280,107.12/x
  3. Step 3: Cross multiply
    879,170.16x = 1,318,682.28 × 280,107.12
  4. Step 4: Simplify right side
    879,170.16x = 369,372,295,645.83
  5. Step 5: Solve for x
    x = 369,372,295,645.83/879,170.16
  6. Step 6: Final answer
    x = 420,137.43

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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.