Home / 871,391.71-1,307,309.33-511,866.60

Finding the Fourth Proportional to 871,391.71, 1,307,309.33 and 511,866.60

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Solution

The fourth proportional to 871,391.71, 1,307,309.33 and 511,866.60 is: 767,930.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,391.71 : 1,307,309.33 = 511,866.60 : x
  2. Step 2: Convert to fraction form
    871,391.71/1,307,309.33 = 511,866.60/x
  3. Step 3: Cross multiply
    871,391.71x = 1,307,309.33 × 511,866.60
  4. Step 4: Simplify right side
    871,391.71x = 669,167,981,895.38
  5. Step 5: Solve for x
    x = 669,167,981,895.38/871,391.71
  6. Step 6: Final answer
    x = 767,930.17

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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.