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Finding the Fourth Proportional to 721,539.56, 995,656.75 and 488,492.40

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Solution

The fourth proportional to 721,539.56, 995,656.75 and 488,492.40 is: 674,073.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,539.56 : 995,656.75 = 488,492.40 : x
  2. Step 2: Convert to fraction form
    721,539.56/995,656.75 = 488,492.40/x
  3. Step 3: Cross multiply
    721,539.56x = 995,656.75 × 488,492.40
  4. Step 4: Simplify right side
    721,539.56x = 486,370,758,200.27
  5. Step 5: Solve for x
    x = 486,370,758,200.27/721,539.56
  6. Step 6: Final answer
    x = 674,073.59

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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.