Home / 528,983.19-729,956.36-311,200.53

Finding the Fourth Proportional to 528,983.19, 729,956.36 and 311,200.53

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Solution

The fourth proportional to 528,983.19, 729,956.36 and 311,200.53 is: 429,432.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,983.19 : 729,956.36 = 311,200.53 : x
  2. Step 2: Convert to fraction form
    528,983.19/729,956.36 = 311,200.53/x
  3. Step 3: Cross multiply
    528,983.19x = 729,956.36 × 311,200.53
  4. Step 4: Simplify right side
    528,983.19x = 227,162,806,505.04
  5. Step 5: Solve for x
    x = 227,162,806,505.04/528,983.19
  6. Step 6: Final answer
    x = 429,432.94

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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.