Home / 685,637.10-1,028,144.61-445,514.22

Finding the Fourth Proportional to 685,637.10, 1,028,144.61 and 445,514.22

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Solution

The fourth proportional to 685,637.10, 1,028,144.61 and 445,514.22 is: 668,069.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,637.10 : 1,028,144.61 = 445,514.22 : x
  2. Step 2: Convert to fraction form
    685,637.10/1,028,144.61 = 445,514.22/x
  3. Step 3: Cross multiply
    685,637.10x = 1,028,144.61 × 445,514.22
  4. Step 4: Simplify right side
    685,637.10x = 458,053,043,971.35
  5. Step 5: Solve for x
    x = 458,053,043,971.35/685,637.10
  6. Step 6: Final answer
    x = 668,069.22

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Double scale
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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.