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Finding the Fourth Proportional to 598,628.70, 898,380.45 and 421,481.70

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Solution

The fourth proportional to 598,628.70, 898,380.45 and 421,481.70 is: 632,530.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,628.70 : 898,380.45 = 421,481.70 : x
  2. Step 2: Convert to fraction form
    598,628.70/898,380.45 = 421,481.70/x
  3. Step 3: Cross multiply
    598,628.70x = 898,380.45 × 421,481.70
  4. Step 4: Simplify right side
    598,628.70x = 378,650,919,312.77
  5. Step 5: Solve for x
    x = 378,650,919,312.77/598,628.70
  6. Step 6: Final answer
    x = 632,530.51

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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.