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Finding the Fourth Proportional to 823,381.60, 1,235,187.60 and 350,063.20

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Solution

The fourth proportional to 823,381.60, 1,235,187.60 and 350,063.20 is: 525,143.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,381.60 : 1,235,187.60 = 350,063.20 : x
  2. Step 2: Convert to fraction form
    823,381.60/1,235,187.60 = 350,063.20/x
  3. Step 3: Cross multiply
    823,381.60x = 1,235,187.60 × 350,063.20
  4. Step 4: Simplify right side
    823,381.60x = 432,393,723,856.32
  5. Step 5: Solve for x
    x = 432,393,723,856.32/823,381.60
  6. Step 6: Final answer
    x = 525,143.78

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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.