Home / 728,199.84-1,004,949.84-405,912.24

Finding the Fourth Proportional to 728,199.84, 1,004,949.84 and 405,912.24

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Solution

The fourth proportional to 728,199.84, 1,004,949.84 and 405,912.24 is: 560,177.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,199.84 : 1,004,949.84 = 405,912.24 : x
  2. Step 2: Convert to fraction form
    728,199.84/1,004,949.84 = 405,912.24/x
  3. Step 3: Cross multiply
    728,199.84x = 1,004,949.84 × 405,912.24
  4. Step 4: Simplify right side
    728,199.84x = 407,921,440,642.04
  5. Step 5: Solve for x
    x = 407,921,440,642.04/728,199.84
  6. Step 6: Final answer
    x = 560,177.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.