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Finding the Fourth Proportional to 520,062.70, 780,094.05 and 204,529.90

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Solution

The fourth proportional to 520,062.70, 780,094.05 and 204,529.90 is: 306,794.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,062.70 : 780,094.05 = 204,529.90 : x
  2. Step 2: Convert to fraction form
    520,062.70/780,094.05 = 204,529.90/x
  3. Step 3: Cross multiply
    520,062.70x = 780,094.05 × 204,529.90
  4. Step 4: Simplify right side
    520,062.70x = 159,552,558,037.10
  5. Step 5: Solve for x
    x = 159,552,558,037.10/520,062.70
  6. Step 6: Final answer
    x = 306,794.85

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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.