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Finding the Fourth Proportional to 978,754.86, 1,350,679.50 and 543,238.92

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Solution

The fourth proportional to 978,754.86, 1,350,679.50 and 543,238.92 is: 749,668.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,754.86 : 1,350,679.50 = 543,238.92 : x
  2. Step 2: Convert to fraction form
    978,754.86/1,350,679.50 = 543,238.92/x
  3. Step 3: Cross multiply
    978,754.86x = 1,350,679.50 × 543,238.92
  4. Step 4: Simplify right side
    978,754.86x = 733,741,672,846.14
  5. Step 5: Solve for x
    x = 733,741,672,846.14/978,754.86
  6. Step 6: Final answer
    x = 749,668.48

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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.