Home / 879,377.79-1,319,162.28-280,198.11

Finding the Fourth Proportional to 879,377.79, 1,319,162.28 and 280,198.11

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Solution

The fourth proportional to 879,377.79, 1,319,162.28 and 280,198.11 is: 420,327.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,377.79 : 1,319,162.28 = 280,198.11 : x
  2. Step 2: Convert to fraction form
    879,377.79/1,319,162.28 = 280,198.11/x
  3. Step 3: Cross multiply
    879,377.79x = 1,319,162.28 × 280,198.11
  4. Step 4: Simplify right side
    879,377.79x = 369,626,777,639.29
  5. Step 5: Solve for x
    x = 369,626,777,639.29/879,377.79
  6. Step 6: Final answer
    x = 420,327.62

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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.