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Finding the Fourth Proportional to 647,213.70, 970,820.55 and 529,115.70

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Solution

The fourth proportional to 647,213.70, 970,820.55 and 529,115.70 is: 793,673.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,213.70 : 970,820.55 = 529,115.70 : x
  2. Step 2: Convert to fraction form
    647,213.70/970,820.55 = 529,115.70/x
  3. Step 3: Cross multiply
    647,213.70x = 970,820.55 × 529,115.70
  4. Step 4: Simplify right side
    647,213.70x = 513,676,394,887.64
  5. Step 5: Solve for x
    x = 513,676,394,887.64/647,213.70
  6. Step 6: Final answer
    x = 793,673.55

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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.