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Finding the Fourth Proportional to 552,338.64, 761,165.64 and 393,086.16

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Solution

The fourth proportional to 552,338.64, 761,165.64 and 393,086.16 is: 541,703.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,338.64 : 761,165.64 = 393,086.16 : x
  2. Step 2: Convert to fraction form
    552,338.64/761,165.64 = 393,086.16/x
  3. Step 3: Cross multiply
    552,338.64x = 761,165.64 × 393,086.16
  4. Step 4: Simplify right side
    552,338.64x = 299,203,678,551.54
  5. Step 5: Solve for x
    x = 299,203,678,551.54/552,338.64
  6. Step 6: Final answer
    x = 541,703.33

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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.