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Finding the Fourth Proportional to 978,092.20, 1,467,138.30 and 446,651.20

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Solution

The fourth proportional to 978,092.20, 1,467,138.30 and 446,651.20 is: 669,976.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,092.20 : 1,467,138.30 = 446,651.20 : x
  2. Step 2: Convert to fraction form
    978,092.20/1,467,138.30 = 446,651.20/x
  3. Step 3: Cross multiply
    978,092.20x = 1,467,138.30 × 446,651.20
  4. Step 4: Simplify right side
    978,092.20x = 655,299,082,260.96
  5. Step 5: Solve for x
    x = 655,299,082,260.96/978,092.20
  6. Step 6: Final answer
    x = 669,976.80

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1.5x scale

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.