Home / 827,166.20-1,240,979.70-406,455.80

Finding the Fourth Proportional to 827,166.20, 1,240,979.70 and 406,455.80

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Solution

The fourth proportional to 827,166.20, 1,240,979.70 and 406,455.80 is: 609,796.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,166.20 : 1,240,979.70 = 406,455.80 : x
  2. Step 2: Convert to fraction form
    827,166.20/1,240,979.70 = 406,455.80/x
  3. Step 3: Cross multiply
    827,166.20x = 1,240,979.70 × 406,455.80
  4. Step 4: Simplify right side
    827,166.20x = 504,403,396,747.26
  5. Step 5: Solve for x
    x = 504,403,396,747.26/827,166.20
  6. Step 6: Final answer
    x = 609,796.91

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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.