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Finding the Fourth Proportional to 644,707, 967,004.79 and 218,233.68

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Solution

The fourth proportional to 644,707, 967,004.79 and 218,233.68 is: 327,331.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,707 : 967,004.79 = 218,233.68 : x
  2. Step 2: Convert to fraction form
    644,707/967,004.79 = 218,233.68/x
  3. Step 3: Cross multiply
    644,707x = 967,004.79 × 218,233.68
  4. Step 4: Simplify right side
    644,707x = 211,033,013,899.33
  5. Step 5: Solve for x
    x = 211,033,013,899.33/644,707
  6. Step 6: Final answer
    x = 327,331.66

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1.5x scale

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.