Home / 716,669.82-988,983.39-394,379.73

Finding the Fourth Proportional to 716,669.82, 988,983.39 and 394,379.73

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Solution

The fourth proportional to 716,669.82, 988,983.39 and 394,379.73 is: 544,232.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,669.82 : 988,983.39 = 394,379.73 : x
  2. Step 2: Convert to fraction form
    716,669.82/988,983.39 = 394,379.73/x
  3. Step 3: Cross multiply
    716,669.82x = 988,983.39 × 394,379.73
  4. Step 4: Simplify right side
    716,669.82x = 390,035,002,322.69
  5. Step 5: Solve for x
    x = 390,035,002,322.69/716,669.82
  6. Step 6: Final answer
    x = 544,232.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.