Home / 687,812.10-1,031,897.37-261,355.62

Finding the Fourth Proportional to 687,812.10, 1,031,897.37 and 261,355.62

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Solution

The fourth proportional to 687,812.10, 1,031,897.37 and 261,355.62 is: 392,101.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,812.10 : 1,031,897.37 = 261,355.62 : x
  2. Step 2: Convert to fraction form
    687,812.10/1,031,897.37 = 261,355.62/x
  3. Step 3: Cross multiply
    687,812.10x = 1,031,897.37 × 261,355.62
  4. Step 4: Simplify right side
    687,812.10x = 269,692,176,912.72
  5. Step 5: Solve for x
    x = 269,692,176,912.72/687,812.10
  6. Step 6: Final answer
    x = 392,101.53

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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.