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Finding the Fourth Proportional to 528,253.80, 729,120.33 and 324,353.58

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Solution

The fourth proportional to 528,253.80, 729,120.33 and 324,353.58 is: 447,687.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,253.80 : 729,120.33 = 324,353.58 : x
  2. Step 2: Convert to fraction form
    528,253.80/729,120.33 = 324,353.58/x
  3. Step 3: Cross multiply
    528,253.80x = 729,120.33 × 324,353.58
  4. Step 4: Simplify right side
    528,253.80x = 236,492,789,286.28
  5. Step 5: Solve for x
    x = 236,492,789,286.28/528,253.80
  6. Step 6: Final answer
    x = 447,687.81

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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.