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Finding the Fourth Proportional to 624,940.20, 862,407.24 and 338,457.78

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Solution

The fourth proportional to 624,940.20, 862,407.24 and 338,457.78 is: 467,066.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,940.20 : 862,407.24 = 338,457.78 : x
  2. Step 2: Convert to fraction form
    624,940.20/862,407.24 = 338,457.78/x
  3. Step 3: Cross multiply
    624,940.20x = 862,407.24 × 338,457.78
  4. Step 4: Simplify right side
    624,940.20x = 291,888,439,906.33
  5. Step 5: Solve for x
    x = 291,888,439,906.33/624,940.20
  6. Step 6: Final answer
    x = 467,066.19

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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.