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Finding the Fourth Proportional to 598,364.70, 897,984.45 and 421,217.70

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Solution

The fourth proportional to 598,364.70, 897,984.45 and 421,217.70 is: 632,134.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,364.70 : 897,984.45 = 421,217.70 : x
  2. Step 2: Convert to fraction form
    598,364.70/897,984.45 = 421,217.70/x
  3. Step 3: Cross multiply
    598,364.70x = 897,984.45 × 421,217.70
  4. Step 4: Simplify right side
    598,364.70x = 378,246,944,664.77
  5. Step 5: Solve for x
    x = 378,246,944,664.77/598,364.70
  6. Step 6: Final answer
    x = 632,134.46

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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.