Home / 728,127.57-1,004,798.93-422,258.61

Finding the Fourth Proportional to 728,127.57, 1,004,798.93 and 422,258.61

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Solution

The fourth proportional to 728,127.57, 1,004,798.93 and 422,258.61 is: 582,706.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,127.57 : 1,004,798.93 = 422,258.61 : x
  2. Step 2: Convert to fraction form
    728,127.57/1,004,798.93 = 422,258.61/x
  3. Step 3: Cross multiply
    728,127.57x = 1,004,798.93 × 422,258.61
  4. Step 4: Simplify right side
    728,127.57x = 424,284,997,399.99
  5. Step 5: Solve for x
    x = 424,284,997,399.99/728,127.57
  6. Step 6: Final answer
    x = 582,706.95

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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.