Home / 728,003.26-1,004,647.87-422,260.66

Finding the Fourth Proportional to 728,003.26, 1,004,647.87 and 422,260.66

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Solution

The fourth proportional to 728,003.26, 1,004,647.87 and 422,260.66 is: 582,721.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,003.26 : 1,004,647.87 = 422,260.66 : x
  2. Step 2: Convert to fraction form
    728,003.26/1,004,647.87 = 422,260.66/x
  3. Step 3: Cross multiply
    728,003.26x = 1,004,647.87 × 422,260.66
  4. Step 4: Simplify right side
    728,003.26x = 424,223,272,653.79
  5. Step 5: Solve for x
    x = 424,223,272,653.79/728,003.26
  6. Step 6: Final answer
    x = 582,721.67

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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.