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Finding the Fourth Proportional to 716,364.26, 988,551.51 and 394,053.92

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Solution

The fourth proportional to 716,364.26, 988,551.51 and 394,053.92 is: 543,777.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,364.26 : 988,551.51 = 394,053.92 : x
  2. Step 2: Convert to fraction form
    716,364.26/988,551.51 = 394,053.92/x
  3. Step 3: Cross multiply
    716,364.26x = 988,551.51 × 394,053.92
  4. Step 4: Simplify right side
    716,364.26x = 389,542,597,637.42
  5. Step 5: Solve for x
    x = 389,542,597,637.42/716,364.26
  6. Step 6: Final answer
    x = 543,777.26

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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.