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Finding the Fourth Proportional to 721,963.94, 995,997.39 and 435,324.78

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Solution

The fourth proportional to 721,963.94, 995,997.39 and 435,324.78 is: 600,559.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,963.94 : 995,997.39 = 435,324.78 : x
  2. Step 2: Convert to fraction form
    721,963.94/995,997.39 = 435,324.78/x
  3. Step 3: Cross multiply
    721,963.94x = 995,997.39 × 435,324.78
  4. Step 4: Simplify right side
    721,963.94x = 433,582,344,682.32
  5. Step 5: Solve for x
    x = 433,582,344,682.32/721,963.94
  6. Step 6: Final answer
    x = 600,559.56

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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.