Home / 831,911.21-1,247,866.86-270,945.71

Finding the Fourth Proportional to 831,911.21, 1,247,866.86 and 270,945.71

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Solution

The fourth proportional to 831,911.21, 1,247,866.86 and 270,945.71 is: 406,418.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,911.21 : 1,247,866.86 = 270,945.71 : x
  2. Step 2: Convert to fraction form
    831,911.21/1,247,866.86 = 270,945.71/x
  3. Step 3: Cross multiply
    831,911.21x = 1,247,866.86 × 270,945.71
  4. Step 4: Simplify right side
    831,911.21x = 338,104,171,824.38
  5. Step 5: Solve for x
    x = 338,104,171,824.38/831,911.21
  6. Step 6: Final answer
    x = 406,418.58

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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.