Home / 687,808.40-1,031,891.52-261,352.40

Finding the Fourth Proportional to 687,808.40, 1,031,891.52 and 261,352.40

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Solution

The fourth proportional to 687,808.40, 1,031,891.52 and 261,352.40 is: 392,096.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,808.40 : 1,031,891.52 = 261,352.40 : x
  2. Step 2: Convert to fraction form
    687,808.40/1,031,891.52 = 261,352.40/x
  3. Step 3: Cross multiply
    687,808.40x = 1,031,891.52 × 261,352.40
  4. Step 4: Simplify right side
    687,808.40x = 269,687,325,291.65
  5. Step 5: Solve for x
    x = 269,687,325,291.65/687,808.40
  6. Step 6: Final answer
    x = 392,096.59

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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.