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Finding the Fourth Proportional to 940,334.40, 1,410,728.40 and 309,214.80

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Solution

The fourth proportional to 940,334.40, 1,410,728.40 and 309,214.80 is: 463,896.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    940,334.40 : 1,410,728.40 = 309,214.80 : x
  2. Step 2: Convert to fraction form
    940,334.40/1,410,728.40 = 309,214.80/x
  3. Step 3: Cross multiply
    940,334.40x = 1,410,728.40 × 309,214.80
  4. Step 4: Simplify right side
    940,334.40x = 436,218,100,060.32
  5. Step 5: Solve for x
    x = 436,218,100,060.32/940,334.40
  6. Step 6: Final answer
    x = 463,896.78

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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.