Home / 687,753.04-1,031,297.72-288,286.56

Finding the Fourth Proportional to 687,753.04, 1,031,297.72 and 288,286.56

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Solution

The fourth proportional to 687,753.04, 1,031,297.72 and 288,286.56 is: 432,290.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,753.04 : 1,031,297.72 = 288,286.56 : x
  2. Step 2: Convert to fraction form
    687,753.04/1,031,297.72 = 288,286.56/x
  3. Step 3: Cross multiply
    687,753.04x = 1,031,297.72 × 288,286.56
  4. Step 4: Simplify right side
    687,753.04x = 297,309,272,034.64
  5. Step 5: Solve for x
    x = 297,309,272,034.64/687,753.04
  6. Step 6: Final answer
    x = 432,290.74

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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.