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Finding the Fourth Proportional to 610,961.52, 843,059.16 and 339,020.40

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Solution

The fourth proportional to 610,961.52, 843,059.16 and 339,020.40 is: 467,810.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,961.52 : 843,059.16 = 339,020.40 : x
  2. Step 2: Convert to fraction form
    610,961.52/843,059.16 = 339,020.40/x
  3. Step 3: Cross multiply
    610,961.52x = 843,059.16 × 339,020.40
  4. Step 4: Simplify right side
    610,961.52x = 285,814,253,646.86
  5. Step 5: Solve for x
    x = 285,814,253,646.86/610,961.52
  6. Step 6: Final answer
    x = 467,810.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.