Home / 687,610.56-1,031,626.98-328,239.96

Finding the Fourth Proportional to 687,610.56, 1,031,626.98 and 328,239.96

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Solution

The fourth proportional to 687,610.56, 1,031,626.98 and 328,239.96 is: 492,460.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,610.56 : 1,031,626.98 = 328,239.96 : x
  2. Step 2: Convert to fraction form
    687,610.56/1,031,626.98 = 328,239.96/x
  3. Step 3: Cross multiply
    687,610.56x = 1,031,626.98 × 328,239.96
  4. Step 4: Simplify right side
    687,610.56x = 338,621,198,650.12
  5. Step 5: Solve for x
    x = 338,621,198,650.12/687,610.56
  6. Step 6: Final answer
    x = 492,460.73

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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.