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Finding the Fourth Proportional to 647,212.20, 970,818.30 and 529,114.20

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Solution

The fourth proportional to 647,212.20, 970,818.30 and 529,114.20 is: 793,671.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,212.20 : 970,818.30 = 529,114.20 : x
  2. Step 2: Convert to fraction form
    647,212.20/970,818.30 = 529,114.20/x
  3. Step 3: Cross multiply
    647,212.20x = 970,818.30 × 529,114.20
  4. Step 4: Simplify right side
    647,212.20x = 513,673,748,149.86
  5. Step 5: Solve for x
    x = 513,673,748,149.86/647,212.20
  6. Step 6: Final answer
    x = 793,671.30

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Double scale
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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.