Home / 511,581.15-705,986.55-282,147.30

Finding the Fourth Proportional to 511,581.15, 705,986.55 and 282,147.30

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Solution

The fourth proportional to 511,581.15, 705,986.55 and 282,147.30 is: 389,365.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,581.15 : 705,986.55 = 282,147.30 : x
  2. Step 2: Convert to fraction form
    511,581.15/705,986.55 = 282,147.30/x
  3. Step 3: Cross multiply
    511,581.15x = 705,986.55 × 282,147.30
  4. Step 4: Simplify right side
    511,581.15x = 199,192,198,918.82
  5. Step 5: Solve for x
    x = 199,192,198,918.82/511,581.15
  6. Step 6: Final answer
    x = 389,365.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.