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Finding the Fourth Proportional to 886,820.90, 1,330,404.15 and 354,251.30

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Solution

The fourth proportional to 886,820.90, 1,330,404.15 and 354,251.30 is: 531,445.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,820.90 : 1,330,404.15 = 354,251.30 : x
  2. Step 2: Convert to fraction form
    886,820.90/1,330,404.15 = 354,251.30/x
  3. Step 3: Cross multiply
    886,820.90x = 1,330,404.15 × 354,251.30
  4. Step 4: Simplify right side
    886,820.90x = 471,297,399,662.90
  5. Step 5: Solve for x
    x = 471,297,399,662.90/886,820.90
  6. Step 6: Final answer
    x = 531,445.98

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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.