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Finding the Fourth Proportional to 486,029.60, 729,044.40 and 308,736.80

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Solution

The fourth proportional to 486,029.60, 729,044.40 and 308,736.80 is: 463,105.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,029.60 : 729,044.40 = 308,736.80 : x
  2. Step 2: Convert to fraction form
    486,029.60/729,044.40 = 308,736.80/x
  3. Step 3: Cross multiply
    486,029.60x = 729,044.40 × 308,736.80
  4. Step 4: Simplify right side
    486,029.60x = 225,082,835,113.92
  5. Step 5: Solve for x
    x = 225,082,835,113.92/486,029.60
  6. Step 6: Final answer
    x = 463,105.20

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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.