Home / 822,028.80-1,232,121.60-422,515.20

Finding the Fourth Proportional to 822,028.80, 1,232,121.60 and 422,515.20

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Solution

The fourth proportional to 822,028.80, 1,232,121.60 and 422,515.20 is: 633,299.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,028.80 : 1,232,121.60 = 422,515.20 : x
  2. Step 2: Convert to fraction form
    822,028.80/1,232,121.60 = 422,515.20/x
  3. Step 3: Cross multiply
    822,028.80x = 1,232,121.60 × 422,515.20
  4. Step 4: Simplify right side
    822,028.80x = 520,590,104,248.32
  5. Step 5: Solve for x
    x = 520,590,104,248.32/822,028.80
  6. Step 6: Final answer
    x = 633,299.11

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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.