Home / 690,764.50-1,036,205.08-192,128.50

Finding the Fourth Proportional to 690,764.50, 1,036,205.08 and 192,128.50

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Solution

The fourth proportional to 690,764.50, 1,036,205.08 and 192,128.50 is: 288,208.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,764.50 : 1,036,205.08 = 192,128.50 : x
  2. Step 2: Convert to fraction form
    690,764.50/1,036,205.08 = 192,128.50/x
  3. Step 3: Cross multiply
    690,764.50x = 1,036,205.08 × 192,128.50
  4. Step 4: Simplify right side
    690,764.50x = 199,084,527,712.78
  5. Step 5: Solve for x
    x = 199,084,527,712.78/690,764.50
  6. Step 6: Final answer
    x = 288,208.97

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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.