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Finding the Fourth Proportional to 978,450.36, 1,350,320.40 and 548,755.92

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Solution

The fourth proportional to 978,450.36, 1,350,320.40 and 548,755.92 is: 757,316.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,450.36 : 1,350,320.40 = 548,755.92 : x
  2. Step 2: Convert to fraction form
    978,450.36/1,350,320.40 = 548,755.92/x
  3. Step 3: Cross multiply
    978,450.36x = 1,350,320.40 × 548,755.92
  4. Step 4: Simplify right side
    978,450.36x = 740,996,313,396.77
  5. Step 5: Solve for x
    x = 740,996,313,396.77/978,450.36
  6. Step 6: Final answer
    x = 757,316.20

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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.