Home / 831,579.32-1,147,578.49-449,605.19

Finding the Fourth Proportional to 831,579.32, 1,147,578.49 and 449,605.19

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Solution

The fourth proportional to 831,579.32, 1,147,578.49 and 449,605.19 is: 620,454.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,579.32 : 1,147,578.49 = 449,605.19 : x
  2. Step 2: Convert to fraction form
    831,579.32/1,147,578.49 = 449,605.19/x
  3. Step 3: Cross multiply
    831,579.32x = 1,147,578.49 × 449,605.19
  4. Step 4: Simplify right side
    831,579.32x = 515,957,245,036.36
  5. Step 5: Solve for x
    x = 515,957,245,036.36/831,579.32
  6. Step 6: Final answer
    x = 620,454.64

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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.