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Finding the Fourth Proportional to 611,730.60, 843,997.76 and 353,513.46

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Solution

The fourth proportional to 611,730.60, 843,997.76 and 353,513.46 is: 487,738.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,730.60 : 843,997.76 = 353,513.46 : x
  2. Step 2: Convert to fraction form
    611,730.60/843,997.76 = 353,513.46/x
  3. Step 3: Cross multiply
    611,730.60x = 843,997.76 × 353,513.46
  4. Step 4: Simplify right side
    611,730.60x = 298,364,571,092.95
  5. Step 5: Solve for x
    x = 298,364,571,092.95/611,730.60
  6. Step 6: Final answer
    x = 487,738.51

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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.