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Finding the Fourth Proportional to 978,640.94, 1,350,433.74 and 548,838.03

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Solution

The fourth proportional to 978,640.94, 1,350,433.74 and 548,838.03 is: 757,345.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,640.94 : 1,350,433.74 = 548,838.03 : x
  2. Step 2: Convert to fraction form
    978,640.94/1,350,433.74 = 548,838.03/x
  3. Step 3: Cross multiply
    978,640.94x = 1,350,433.74 × 548,838.03
  4. Step 4: Simplify right side
    978,640.94x = 741,169,393,507.13
  5. Step 5: Solve for x
    x = 741,169,393,507.13/978,640.94
  6. Step 6: Final answer
    x = 757,345.59

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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.