Home / 690,756-1,036,192.68-192,120

Finding the Fourth Proportional to 690,756, 1,036,192.68 and 192,120

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Solution

The fourth proportional to 690,756, 1,036,192.68 and 192,120 is: 288,196.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,756 : 1,036,192.68 = 192,120 : x
  2. Step 2: Convert to fraction form
    690,756/1,036,192.68 = 192,120/x
  3. Step 3: Cross multiply
    690,756x = 1,036,192.68 × 192,120
  4. Step 4: Simplify right side
    690,756x = 199,073,337,681.60
  5. Step 5: Solve for x
    x = 199,073,337,681.60/690,756
  6. Step 6: Final answer
    x = 288,196.32

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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.