Home / 807,469.20-1,211,203.80-542,048.40

Finding the Fourth Proportional to 807,469.20, 1,211,203.80 and 542,048.40

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Solution

The fourth proportional to 807,469.20, 1,211,203.80 and 542,048.40 is: 813,072.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,469.20 : 1,211,203.80 = 542,048.40 : x
  2. Step 2: Convert to fraction form
    807,469.20/1,211,203.80 = 542,048.40/x
  3. Step 3: Cross multiply
    807,469.20x = 1,211,203.80 × 542,048.40
  4. Step 4: Simplify right side
    807,469.20x = 656,531,081,863.92
  5. Step 5: Solve for x
    x = 656,531,081,863.92/807,469.20
  6. Step 6: Final answer
    x = 813,072.60

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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.