Home / 687,551.20-1,031,326.80-214,274.56

Finding the Fourth Proportional to 687,551.20, 1,031,326.80 and 214,274.56

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Solution

The fourth proportional to 687,551.20, 1,031,326.80 and 214,274.56 is: 321,411.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,551.20 : 1,031,326.80 = 214,274.56 : x
  2. Step 2: Convert to fraction form
    687,551.20/1,031,326.80 = 214,274.56/x
  3. Step 3: Cross multiply
    687,551.20x = 1,031,326.80 × 214,274.56
  4. Step 4: Simplify right side
    687,551.20x = 220,987,096,286.21
  5. Step 5: Solve for x
    x = 220,987,096,286.21/687,551.20
  6. Step 6: Final answer
    x = 321,411.84

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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.