Home / 650,944.52-898,109.10-421,137.80

Finding the Fourth Proportional to 650,944.52, 898,109.10 and 421,137.80

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Solution

The fourth proportional to 650,944.52, 898,109.10 and 421,137.80 is: 581,044.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,944.52 : 898,109.10 = 421,137.80 : x
  2. Step 2: Convert to fraction form
    650,944.52/898,109.10 = 421,137.80/x
  3. Step 3: Cross multiply
    650,944.52x = 898,109.10 × 421,137.80
  4. Step 4: Simplify right side
    650,944.52x = 378,227,690,533.98
  5. Step 5: Solve for x
    x = 378,227,690,533.98/650,944.52
  6. Step 6: Final answer
    x = 581,044.43

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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.