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Finding the Fourth Proportional to 716,363.76, 988,550.82 and 394,053.42

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Solution

The fourth proportional to 716,363.76, 988,550.82 and 394,053.42 is: 543,776.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,363.76 : 988,550.82 = 394,053.42 : x
  2. Step 2: Convert to fraction form
    716,363.76/988,550.82 = 394,053.42/x
  3. Step 3: Cross multiply
    716,363.76x = 988,550.82 × 394,053.42
  4. Step 4: Simplify right side
    716,363.76x = 389,541,831,464.80
  5. Step 5: Solve for x
    x = 389,541,831,464.80/716,363.76
  6. Step 6: Final answer
    x = 543,776.57

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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.