Home / 801,406.80-1,105,967.78-438,845.96

Finding the Fourth Proportional to 801,406.80, 1,105,967.78 and 438,845.96

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Solution

The fourth proportional to 801,406.80, 1,105,967.78 and 438,845.96 is: 605,621.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,406.80 : 1,105,967.78 = 438,845.96 : x
  2. Step 2: Convert to fraction form
    801,406.80/1,105,967.78 = 438,845.96/x
  3. Step 3: Cross multiply
    801,406.80x = 1,105,967.78 × 438,845.96
  4. Step 4: Simplify right side
    801,406.80x = 485,349,492,143.17
  5. Step 5: Solve for x
    x = 485,349,492,143.17/801,406.80
  6. Step 6: Final answer
    x = 605,621.88

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1.5x scale

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.