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Finding the Fourth Proportional to 721,541.64, 995,659.65 and 488,494.53

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Solution

The fourth proportional to 721,541.64, 995,659.65 and 488,494.53 is: 674,076.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,541.64 : 995,659.65 = 488,494.53 : x
  2. Step 2: Convert to fraction form
    721,541.64/995,659.65 = 488,494.53/x
  3. Step 3: Cross multiply
    721,541.64x = 995,659.65 × 488,494.53
  4. Step 4: Simplify right side
    721,541.64x = 486,374,292,766.72
  5. Step 5: Solve for x
    x = 486,374,292,766.72/721,541.64
  6. Step 6: Final answer
    x = 674,076.54

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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.