Home / 687,966.80-1,031,604.60-313,566.80

Finding the Fourth Proportional to 687,966.80, 1,031,604.60 and 313,566.80

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Solution

The fourth proportional to 687,966.80, 1,031,604.60 and 313,566.80 is: 470,192.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,966.80 : 1,031,604.60 = 313,566.80 : x
  2. Step 2: Convert to fraction form
    687,966.80/1,031,604.60 = 313,566.80/x
  3. Step 3: Cross multiply
    687,966.80x = 1,031,604.60 × 313,566.80
  4. Step 4: Simplify right side
    687,966.80x = 323,476,953,287.28
  5. Step 5: Solve for x
    x = 323,476,953,287.28/687,966.80
  6. Step 6: Final answer
    x = 470,192.68

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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.