Home / 816,103.80-1,224,155.70-808,230.60

Finding the Fourth Proportional to 816,103.80, 1,224,155.70 and 808,230.60

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Solution

The fourth proportional to 816,103.80, 1,224,155.70 and 808,230.60 is: 1,212,345.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,103.80 : 1,224,155.70 = 808,230.60 : x
  2. Step 2: Convert to fraction form
    816,103.80/1,224,155.70 = 808,230.60/x
  3. Step 3: Cross multiply
    816,103.80x = 1,224,155.70 × 808,230.60
  4. Step 4: Simplify right side
    816,103.80x = 989,400,095,904.42
  5. Step 5: Solve for x
    x = 989,400,095,904.42/816,103.80
  6. Step 6: Final answer
    x = 1,212,345.90

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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.