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Finding the Fourth Proportional to 664,407.87, 995,116.10 and 465,615.72

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Solution

The fourth proportional to 664,407.87, 995,116.10 and 465,615.72 is: 697,375.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,407.87 : 995,116.10 = 465,615.72 : x
  2. Step 2: Convert to fraction form
    664,407.87/995,116.10 = 465,615.72/x
  3. Step 3: Cross multiply
    664,407.87x = 995,116.10 × 465,615.72
  4. Step 4: Simplify right side
    664,407.87x = 463,341,694,913.02
  5. Step 5: Solve for x
    x = 463,341,694,913.02/664,407.87
  6. Step 6: Final answer
    x = 697,375.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.