Home / 820,019.84-1,230,576.96-287,540.48

Finding the Fourth Proportional to 820,019.84, 1,230,576.96 and 287,540.48

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Solution

The fourth proportional to 820,019.84, 1,230,576.96 and 287,540.48 is: 431,502.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,019.84 : 1,230,576.96 = 287,540.48 : x
  2. Step 2: Convert to fraction form
    820,019.84/1,230,576.96 = 287,540.48/x
  3. Step 3: Cross multiply
    820,019.84x = 1,230,576.96 × 287,540.48
  4. Step 4: Simplify right side
    820,019.84x = 353,840,689,755.34
  5. Step 5: Solve for x
    x = 353,840,689,755.34/820,019.84
  6. Step 6: Final answer
    x = 431,502.60

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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.