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Finding the Fourth Proportional to 687,791.82, 1,031,700.06 and 238,528.56

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Solution

The fourth proportional to 687,791.82, 1,031,700.06 and 238,528.56 is: 357,797.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,791.82 : 1,031,700.06 = 238,528.56 : x
  2. Step 2: Convert to fraction form
    687,791.82/1,031,700.06 = 238,528.56/x
  3. Step 3: Cross multiply
    687,791.82x = 1,031,700.06 × 238,528.56
  4. Step 4: Simplify right side
    687,791.82x = 246,089,929,663.71
  5. Step 5: Solve for x
    x = 246,089,929,663.71/687,791.82
  6. Step 6: Final answer
    x = 357,797.12

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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.