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Finding the Fourth Proportional to 978,756.86, 1,350,682.26 and 543,240.92

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Solution

The fourth proportional to 978,756.86, 1,350,682.26 and 543,240.92 is: 749,671.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,756.86 : 1,350,682.26 = 543,240.92 : x
  2. Step 2: Convert to fraction form
    978,756.86/1,350,682.26 = 543,240.92/x
  3. Step 3: Cross multiply
    978,756.86x = 1,350,682.26 × 543,240.92
  4. Step 4: Simplify right side
    978,756.86x = 733,745,873,550.08
  5. Step 5: Solve for x
    x = 733,745,873,550.08/978,756.86
  6. Step 6: Final answer
    x = 749,671.24

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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.