Home / 693,140.80-1,039,711.20-219,863.20

Finding the Fourth Proportional to 693,140.80, 1,039,711.20 and 219,863.20

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Solution

The fourth proportional to 693,140.80, 1,039,711.20 and 219,863.20 is: 329,794.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,140.80 : 1,039,711.20 = 219,863.20 : x
  2. Step 2: Convert to fraction form
    693,140.80/1,039,711.20 = 219,863.20/x
  3. Step 3: Cross multiply
    693,140.80x = 1,039,711.20 × 219,863.20
  4. Step 4: Simplify right side
    693,140.80x = 228,594,231,507.84
  5. Step 5: Solve for x
    x = 228,594,231,507.84/693,140.80
  6. Step 6: Final answer
    x = 329,794.80

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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.