Home / 516,334.25-712,608.09-289,979.75

Finding the Fourth Proportional to 516,334.25, 712,608.09 and 289,979.75

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Solution

The fourth proportional to 516,334.25, 712,608.09 and 289,979.75 is: 400,209.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,334.25 : 712,608.09 = 289,979.75 : x
  2. Step 2: Convert to fraction form
    516,334.25/712,608.09 = 289,979.75/x
  3. Step 3: Cross multiply
    516,334.25x = 712,608.09 × 289,979.75
  4. Step 4: Simplify right side
    516,334.25x = 206,641,915,786.18
  5. Step 5: Solve for x
    x = 206,641,915,786.18/516,334.25
  6. Step 6: Final answer
    x = 400,209.58

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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.