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Finding the Fourth Proportional to 721,540.07, 995,657.46 and 488,492.93

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Solution

The fourth proportional to 721,540.07, 995,657.46 and 488,492.93 is: 674,074.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,540.07 : 995,657.46 = 488,492.93 : x
  2. Step 2: Convert to fraction form
    721,540.07/995,657.46 = 488,492.93/x
  3. Step 3: Cross multiply
    721,540.07x = 995,657.46 × 488,492.93
  4. Step 4: Simplify right side
    721,540.07x = 486,371,624,933.47
  5. Step 5: Solve for x
    x = 486,371,624,933.47/721,540.07
  6. Step 6: Final answer
    x = 674,074.31

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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.