Home / 827,190.15-1,240,785.23-407,286.15

Finding the Fourth Proportional to 827,190.15, 1,240,785.23 and 407,286.15

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Solution

The fourth proportional to 827,190.15, 1,240,785.23 and 407,286.15 is: 610,929.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,190.15 : 1,240,785.23 = 407,286.15 : x
  2. Step 2: Convert to fraction form
    827,190.15/1,240,785.23 = 407,286.15/x
  3. Step 3: Cross multiply
    827,190.15x = 1,240,785.23 × 407,286.15
  4. Step 4: Simplify right side
    827,190.15x = 505,354,637,267.13
  5. Step 5: Solve for x
    x = 505,354,637,267.13/827,190.15
  6. Step 6: Final answer
    x = 610,929.23

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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.