Home / 721,626.50-995,829.62-399,317.24

Finding the Fourth Proportional to 721,626.50, 995,829.62 and 399,317.24

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Solution

The fourth proportional to 721,626.50, 995,829.62 and 399,317.24 is: 551,049.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,626.50 : 995,829.62 = 399,317.24 : x
  2. Step 2: Convert to fraction form
    721,626.50/995,829.62 = 399,317.24/x
  3. Step 3: Cross multiply
    721,626.50x = 995,829.62 × 399,317.24
  4. Step 4: Simplify right side
    721,626.50x = 397,651,938,856.52
  5. Step 5: Solve for x
    x = 397,651,938,856.52/721,626.50
  6. Step 6: Final answer
    x = 551,049.52

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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.