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Finding the Fourth Proportional to 721,323.48, 995,500.35 and 415,411.32

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Solution

The fourth proportional to 721,323.48, 995,500.35 and 415,411.32 is: 573,310.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,323.48 : 995,500.35 = 415,411.32 : x
  2. Step 2: Convert to fraction form
    721,323.48/995,500.35 = 415,411.32/x
  3. Step 3: Cross multiply
    721,323.48x = 995,500.35 × 415,411.32
  4. Step 4: Simplify right side
    721,323.48x = 413,542,114,453.96
  5. Step 5: Solve for x
    x = 413,542,114,453.96/721,323.48
  6. Step 6: Final answer
    x = 573,310.21

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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.