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Finding the Fourth Proportional to 547,793.10, 821,689.65 and 455,633.10

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Solution

The fourth proportional to 547,793.10, 821,689.65 and 455,633.10 is: 683,449.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,793.10 : 821,689.65 = 455,633.10 : x
  2. Step 2: Convert to fraction form
    547,793.10/821,689.65 = 455,633.10/x
  3. Step 3: Cross multiply
    547,793.10x = 821,689.65 × 455,633.10
  4. Step 4: Simplify right side
    547,793.10x = 374,389,002,467.42
  5. Step 5: Solve for x
    x = 374,389,002,467.42/547,793.10
  6. Step 6: Final answer
    x = 683,449.65

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Similar ratio
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1.5x scale

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.