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Finding the Fourth Proportional to 716,008.37, 988,057.73 and 393,732.05

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Solution

The fourth proportional to 716,008.37, 988,057.73 and 393,732.05 is: 543,331.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,008.37 : 988,057.73 = 393,732.05 : x
  2. Step 2: Convert to fraction form
    716,008.37/988,057.73 = 393,732.05/x
  3. Step 3: Cross multiply
    716,008.37x = 988,057.73 × 393,732.05
  4. Step 4: Simplify right side
    716,008.37x = 389,029,993,582.59
  5. Step 5: Solve for x
    x = 389,029,993,582.59/716,008.37
  6. Step 6: Final answer
    x = 543,331.63

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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.