Home / 687,934.80-1,031,556.60-313,534.80

Finding the Fourth Proportional to 687,934.80, 1,031,556.60 and 313,534.80

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Solution

The fourth proportional to 687,934.80, 1,031,556.60 and 313,534.80 is: 470,144.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,934.80 : 1,031,556.60 = 313,534.80 : x
  2. Step 2: Convert to fraction form
    687,934.80/1,031,556.60 = 313,534.80/x
  3. Step 3: Cross multiply
    687,934.80x = 1,031,556.60 × 313,534.80
  4. Step 4: Simplify right side
    687,934.80x = 323,428,892,269.68
  5. Step 5: Solve for x
    x = 323,428,892,269.68/687,934.80
  6. Step 6: Final answer
    x = 470,144.69

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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.