Home / 687,578.52-1,031,364.62-214,264.20

Finding the Fourth Proportional to 687,578.52, 1,031,364.62 and 214,264.20

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Solution

The fourth proportional to 687,578.52, 1,031,364.62 and 214,264.20 is: 321,395.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,578.52 : 1,031,364.62 = 214,264.20 : x
  2. Step 2: Convert to fraction form
    687,578.52/1,031,364.62 = 214,264.20/x
  3. Step 3: Cross multiply
    687,578.52x = 1,031,364.62 × 214,264.20
  4. Step 4: Simplify right side
    687,578.52x = 220,984,515,212.60
  5. Step 5: Solve for x
    x = 220,984,515,212.60/687,578.52
  6. Step 6: Final answer
    x = 321,395.32

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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.