Home / 687,786.36-1,031,884.56-328,227.15

Finding the Fourth Proportional to 687,786.36, 1,031,884.56 and 328,227.15

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Solution

The fourth proportional to 687,786.36, 1,031,884.56 and 328,227.15 is: 492,438.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,786.36 : 1,031,884.56 = 328,227.15 : x
  2. Step 2: Convert to fraction form
    687,786.36/1,031,884.56 = 328,227.15/x
  3. Step 3: Cross multiply
    687,786.36x = 1,031,884.56 × 328,227.15
  4. Step 4: Simplify right side
    687,786.36x = 338,692,528,257.80
  5. Step 5: Solve for x
    x = 338,692,528,257.80/687,786.36
  6. Step 6: Final answer
    x = 492,438.57

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1.5x scale

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.