Home / 420,981.69-631,629.38-252,622.79

Finding the Fourth Proportional to 420,981.69, 631,629.38 and 252,622.79

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Solution

The fourth proportional to 420,981.69, 631,629.38 and 252,622.79 is: 379,028.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,981.69 : 631,629.38 = 252,622.79 : x
  2. Step 2: Convert to fraction form
    420,981.69/631,629.38 = 252,622.79/x
  3. Step 3: Cross multiply
    420,981.69x = 631,629.38 × 252,622.79
  4. Step 4: Simplify right side
    420,981.69x = 159,563,976,221.57
  5. Step 5: Solve for x
    x = 159,563,976,221.57/420,981.69
  6. Step 6: Final answer
    x = 379,028.30

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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.