Home / 871,211.71-1,306,813.92-339,103.81

Finding the Fourth Proportional to 871,211.71, 1,306,813.92 and 339,103.81

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Solution

The fourth proportional to 871,211.71, 1,306,813.92 and 339,103.81 is: 508,654.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,211.71 : 1,306,813.92 = 339,103.81 : x
  2. Step 2: Convert to fraction form
    871,211.71/1,306,813.92 = 339,103.81/x
  3. Step 3: Cross multiply
    871,211.71x = 1,306,813.92 × 339,103.81
  4. Step 4: Simplify right side
    871,211.71x = 443,145,579,233.04
  5. Step 5: Solve for x
    x = 443,145,579,233.04/871,211.71
  6. Step 6: Final answer
    x = 508,654.30

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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.