Home / 821,696.40-1,232,544.60-489,920.40

Finding the Fourth Proportional to 821,696.40, 1,232,544.60 and 489,920.40

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Solution

The fourth proportional to 821,696.40, 1,232,544.60 and 489,920.40 is: 734,880.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,696.40 : 1,232,544.60 = 489,920.40 : x
  2. Step 2: Convert to fraction form
    821,696.40/1,232,544.60 = 489,920.40/x
  3. Step 3: Cross multiply
    821,696.40x = 1,232,544.60 × 489,920.40
  4. Step 4: Simplify right side
    821,696.40x = 603,848,743,449.84
  5. Step 5: Solve for x
    x = 603,848,743,449.84/821,696.40
  6. Step 6: Final answer
    x = 734,880.60

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Double scale
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Similar ratio
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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.