Home / 687,611.56-1,031,628.48-328,240.96

Finding the Fourth Proportional to 687,611.56, 1,031,628.48 and 328,240.96

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Solution

The fourth proportional to 687,611.56, 1,031,628.48 and 328,240.96 is: 492,462.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,611.56 : 1,031,628.48 = 328,240.96 : x
  2. Step 2: Convert to fraction form
    687,611.56/1,031,628.48 = 328,240.96/x
  3. Step 3: Cross multiply
    687,611.56x = 1,031,628.48 × 328,240.96
  4. Step 4: Simplify right side
    687,611.56x = 338,622,722,638.54
  5. Step 5: Solve for x
    x = 338,622,722,638.54/687,611.56
  6. Step 6: Final answer
    x = 492,462.23

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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.