Home / 690,648.99-1,035,187.89-420,180.92

Finding the Fourth Proportional to 690,648.99, 1,035,187.89 and 420,180.92

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Solution

The fourth proportional to 690,648.99, 1,035,187.89 and 420,180.92 is: 629,793.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,648.99 : 1,035,187.89 = 420,180.92 : x
  2. Step 2: Convert to fraction form
    690,648.99/1,035,187.89 = 420,180.92/x
  3. Step 3: Cross multiply
    690,648.99x = 1,035,187.89 × 420,180.92
  4. Step 4: Simplify right side
    690,648.99x = 434,966,202,581.03
  5. Step 5: Solve for x
    x = 434,966,202,581.03/690,648.99
  6. Step 6: Final answer
    x = 629,793.44

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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.