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Finding the Fourth Proportional to 978,358.80, 1,467,538.20 and 605,110.80

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Solution

The fourth proportional to 978,358.80, 1,467,538.20 and 605,110.80 is: 907,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,358.80 : 1,467,538.20 = 605,110.80 : x
  2. Step 2: Convert to fraction form
    978,358.80/1,467,538.20 = 605,110.80/x
  3. Step 3: Cross multiply
    978,358.80x = 1,467,538.20 × 605,110.80
  4. Step 4: Simplify right side
    978,358.80x = 888,023,214,232.56
  5. Step 5: Solve for x
    x = 888,023,214,232.56/978,358.80
  6. Step 6: Final answer
    x = 907,666.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.