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Finding the Fourth Proportional to 724,196.16, 999,510.84 and 422,390.16

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Solution

The fourth proportional to 724,196.16, 999,510.84 and 422,390.16 is: 582,968.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,196.16 : 999,510.84 = 422,390.16 : x
  2. Step 2: Convert to fraction form
    724,196.16/999,510.84 = 422,390.16/x
  3. Step 3: Cross multiply
    724,196.16x = 999,510.84 × 422,390.16
  4. Step 4: Simplify right side
    724,196.16x = 422,183,543,629.33
  5. Step 5: Solve for x
    x = 422,183,543,629.33/724,196.16
  6. Step 6: Final answer
    x = 582,968.49

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Similar ratio
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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.