Home / 686,540.20-1,029,810.30-658,546.60

Finding the Fourth Proportional to 686,540.20, 1,029,810.30 and 658,546.60

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Solution

The fourth proportional to 686,540.20, 1,029,810.30 and 658,546.60 is: 987,819.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,540.20 : 1,029,810.30 = 658,546.60 : x
  2. Step 2: Convert to fraction form
    686,540.20/1,029,810.30 = 658,546.60/x
  3. Step 3: Cross multiply
    686,540.20x = 1,029,810.30 × 658,546.60
  4. Step 4: Simplify right side
    686,540.20x = 678,178,071,709.98
  5. Step 5: Solve for x
    x = 678,178,071,709.98/686,540.20
  6. Step 6: Final answer
    x = 987,819.90

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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.