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Finding the Fourth Proportional to 533,486.40, 800,229.60 and 489,940.80

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Solution

The fourth proportional to 533,486.40, 800,229.60 and 489,940.80 is: 734,911.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,486.40 : 800,229.60 = 489,940.80 : x
  2. Step 2: Convert to fraction form
    533,486.40/800,229.60 = 489,940.80/x
  3. Step 3: Cross multiply
    533,486.40x = 800,229.60 × 489,940.80
  4. Step 4: Simplify right side
    533,486.40x = 392,065,130,407.68
  5. Step 5: Solve for x
    x = 392,065,130,407.68/533,486.40
  6. Step 6: Final answer
    x = 734,911.20

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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.