Home / 812,668.48-1,218,989.76-221,692.48

Finding the Fourth Proportional to 812,668.48, 1,218,989.76 and 221,692.48

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Solution

The fourth proportional to 812,668.48, 1,218,989.76 and 221,692.48 is: 332,535.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,668.48 : 1,218,989.76 = 221,692.48 : x
  2. Step 2: Convert to fraction form
    812,668.48/1,218,989.76 = 221,692.48/x
  3. Step 3: Cross multiply
    812,668.48x = 1,218,989.76 × 221,692.48
  4. Step 4: Simplify right side
    812,668.48x = 270,240,862,989.01
  5. Step 5: Solve for x
    x = 270,240,862,989.01/812,668.48
  6. Step 6: Final answer
    x = 332,535.18

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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.