Home / 687,620.80-1,031,690.40-332,948.80

Finding the Fourth Proportional to 687,620.80, 1,031,690.40 and 332,948.80

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Solution

The fourth proportional to 687,620.80, 1,031,690.40 and 332,948.80 is: 499,548.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,620.80 : 1,031,690.40 = 332,948.80 : x
  2. Step 2: Convert to fraction form
    687,620.80/1,031,690.40 = 332,948.80/x
  3. Step 3: Cross multiply
    687,620.80x = 1,031,690.40 × 332,948.80
  4. Step 4: Simplify right side
    687,620.80x = 343,500,080,651.52
  5. Step 5: Solve for x
    x = 343,500,080,651.52/687,620.80
  6. Step 6: Final answer
    x = 499,548.71

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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.