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Finding the Fourth Proportional to 978,504.92, 1,350,410.75 and 543,004.70

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Solution

The fourth proportional to 978,504.92, 1,350,410.75 and 543,004.70 is: 749,387.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,504.92 : 1,350,410.75 = 543,004.70 : x
  2. Step 2: Convert to fraction form
    978,504.92/1,350,410.75 = 543,004.70/x
  3. Step 3: Cross multiply
    978,504.92x = 1,350,410.75 × 543,004.70
  4. Step 4: Simplify right side
    978,504.92x = 733,279,381,465.50
  5. Step 5: Solve for x
    x = 733,279,381,465.50/978,504.92
  6. Step 6: Final answer
    x = 749,387.53

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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.