Home / 685,731.90-1,028,481.21-186,979.26

Finding the Fourth Proportional to 685,731.90, 1,028,481.21 and 186,979.26

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Solution

The fourth proportional to 685,731.90, 1,028,481.21 and 186,979.26 is: 280,437.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,731.90 : 1,028,481.21 = 186,979.26 : x
  2. Step 2: Convert to fraction form
    685,731.90/1,028,481.21 = 186,979.26/x
  3. Step 3: Cross multiply
    685,731.90x = 1,028,481.21 × 186,979.26
  4. Step 4: Simplify right side
    685,731.90x = 192,304,655,569.71
  5. Step 5: Solve for x
    x = 192,304,655,569.71/685,731.90
  6. Step 6: Final answer
    x = 280,437.09

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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.