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Finding the Fourth Proportional to 716,382.36, 988,600.56 and 394,092.84

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Solution

The fourth proportional to 716,382.36, 988,600.56 and 394,092.84 is: 543,844.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,382.36 : 988,600.56 = 394,092.84 : x
  2. Step 2: Convert to fraction form
    716,382.36/988,600.56 = 394,092.84/x
  3. Step 3: Cross multiply
    716,382.36x = 988,600.56 × 394,092.84
  4. Step 4: Simplify right side
    716,382.36x = 389,600,402,315.99
  5. Step 5: Solve for x
    x = 389,600,402,315.99/716,382.36
  6. Step 6: Final answer
    x = 543,844.22

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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.