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Finding the Fourth Proportional to 721,372.53, 995,407.52 and 415,548.93

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Solution

The fourth proportional to 721,372.53, 995,407.52 and 415,548.93 is: 573,407.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,372.53 : 995,407.52 = 415,548.93 : x
  2. Step 2: Convert to fraction form
    721,372.53/995,407.52 = 415,548.93/x
  3. Step 3: Cross multiply
    721,372.53x = 995,407.52 × 415,548.93
  4. Step 4: Simplify right side
    721,372.53x = 413,640,529,849.95
  5. Step 5: Solve for x
    x = 413,640,529,849.95/721,372.53
  6. Step 6: Final answer
    x = 573,407.65

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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.