Home / 716,400.45-988,625.52-394,110.90

Finding the Fourth Proportional to 716,400.45, 988,625.52 and 394,110.90

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Solution

The fourth proportional to 716,400.45, 988,625.52 and 394,110.90 is: 543,869.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,400.45 : 988,625.52 = 394,110.90 : x
  2. Step 2: Convert to fraction form
    716,400.45/988,625.52 = 394,110.90/x
  3. Step 3: Cross multiply
    716,400.45x = 988,625.52 × 394,110.90
  4. Step 4: Simplify right side
    716,400.45x = 389,628,093,450.17
  5. Step 5: Solve for x
    x = 389,628,093,450.17/716,400.45
  6. Step 6: Final answer
    x = 543,869.14

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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.