Home / 801,439.74-1,105,986.81-438,885.76

Finding the Fourth Proportional to 801,439.74, 1,105,986.81 and 438,885.76

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Solution

The fourth proportional to 801,439.74, 1,105,986.81 and 438,885.76 is: 605,662.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,439.74 : 1,105,986.81 = 438,885.76 : x
  2. Step 2: Convert to fraction form
    801,439.74/1,105,986.81 = 438,885.76/x
  3. Step 3: Cross multiply
    801,439.74x = 1,105,986.81 × 438,885.76
  4. Step 4: Simplify right side
    801,439.74x = 485,401,861,656.83
  5. Step 5: Solve for x
    x = 485,401,861,656.83/801,439.74
  6. Step 6: Final answer
    x = 605,662.33

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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.