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Finding the Fourth Proportional to 721,334.72, 995,452.38 and 415,466.03

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Solution

The fourth proportional to 721,334.72, 995,452.38 and 415,466.03 is: 573,349.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,334.72 : 995,452.38 = 415,466.03 : x
  2. Step 2: Convert to fraction form
    721,334.72/995,452.38 = 415,466.03/x
  3. Step 3: Cross multiply
    721,334.72x = 995,452.38 × 415,466.03
  4. Step 4: Simplify right side
    721,334.72x = 413,576,643,395.39
  5. Step 5: Solve for x
    x = 413,576,643,395.39/721,334.72
  6. Step 6: Final answer
    x = 573,349.15

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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.