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Finding the Fourth Proportional to 598,530.20, 898,232.70 and 421,383.20

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Solution

The fourth proportional to 598,530.20, 898,232.70 and 421,383.20 is: 632,382.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,530.20 : 898,232.70 = 421,383.20 : x
  2. Step 2: Convert to fraction form
    598,530.20/898,232.70 = 421,383.20/x
  3. Step 3: Cross multiply
    598,530.20x = 898,232.70 × 421,383.20
  4. Step 4: Simplify right side
    598,530.20x = 378,500,169,470.64
  5. Step 5: Solve for x
    x = 378,500,169,470.64/598,530.20
  6. Step 6: Final answer
    x = 632,382.74

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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.