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Finding the Fourth Proportional to 978,550.96, 1,350,467.70 and 548,858.71

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Solution

The fourth proportional to 978,550.96, 1,350,467.70 and 548,858.71 is: 757,462.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,550.96 : 1,350,467.70 = 548,858.71 : x
  2. Step 2: Convert to fraction form
    978,550.96/1,350,467.70 = 548,858.71/x
  3. Step 3: Cross multiply
    978,550.96x = 1,350,467.70 × 548,858.71
  4. Step 4: Simplify right side
    978,550.96x = 741,215,959,718.67
  5. Step 5: Solve for x
    x = 741,215,959,718.67/978,550.96
  6. Step 6: Final answer
    x = 757,462.81

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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.