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Finding the Fourth Proportional to 724,197.16, 999,512.22 and 422,391.16

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Solution

The fourth proportional to 724,197.16, 999,512.22 and 422,391.16 is: 582,969.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,197.16 : 999,512.22 = 422,391.16 : x
  2. Step 2: Convert to fraction form
    724,197.16/999,512.22 = 422,391.16/x
  3. Step 3: Cross multiply
    724,197.16x = 999,512.22 × 422,391.16
  4. Step 4: Simplify right side
    724,197.16x = 422,185,126,039.98
  5. Step 5: Solve for x
    x = 422,185,126,039.98/724,197.16
  6. Step 6: Final answer
    x = 582,969.87

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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.