Home / 420,821.04-631,378.98-262,864.56

Finding the Fourth Proportional to 420,821.04, 631,378.98 and 262,864.56

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Solution

The fourth proportional to 420,821.04, 631,378.98 and 262,864.56 is: 394,388.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,821.04 : 631,378.98 = 262,864.56 : x
  2. Step 2: Convert to fraction form
    420,821.04/631,378.98 = 262,864.56/x
  3. Step 3: Cross multiply
    420,821.04x = 631,378.98 × 262,864.56
  4. Step 4: Simplify right side
    420,821.04x = 165,967,157,770.95
  5. Step 5: Solve for x
    x = 165,967,157,770.95/420,821.04
  6. Step 6: Final answer
    x = 394,388.93

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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.