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Finding the Fourth Proportional to 647,138.70, 970,552.53 and 331,433.10

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Solution

The fourth proportional to 647,138.70, 970,552.53 and 331,433.10 is: 497,070.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,138.70 : 970,552.53 = 331,433.10 : x
  2. Step 2: Convert to fraction form
    647,138.70/970,552.53 = 331,433.10/x
  3. Step 3: Cross multiply
    647,138.70x = 970,552.53 × 331,433.10
  4. Step 4: Simplify right side
    647,138.70x = 321,673,233,730.74
  5. Step 5: Solve for x
    x = 321,673,233,730.74/647,138.70
  6. Step 6: Final answer
    x = 497,070.00

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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.