Home / 721,629.66-995,824.42-399,353.34

Finding the Fourth Proportional to 721,629.66, 995,824.42 and 399,353.34

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Solution

The fourth proportional to 721,629.66, 995,824.42 and 399,353.34 is: 551,094.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,629.66 : 995,824.42 = 399,353.34 : x
  2. Step 2: Convert to fraction form
    721,629.66/995,824.42 = 399,353.34/x
  3. Step 3: Cross multiply
    721,629.66x = 995,824.42 × 399,353.34
  4. Step 4: Simplify right side
    721,629.66x = 397,685,808,180.56
  5. Step 5: Solve for x
    x = 397,685,808,180.56/721,629.66
  6. Step 6: Final answer
    x = 551,094.04

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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.