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Finding the Fourth Proportional to 689,035.52, 950,783.52 and 398,696.96

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Solution

The fourth proportional to 689,035.52, 950,783.52 and 398,696.96 is: 550,152.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,035.52 : 950,783.52 = 398,696.96 : x
  2. Step 2: Convert to fraction form
    689,035.52/950,783.52 = 398,696.96/x
  3. Step 3: Cross multiply
    689,035.52x = 950,783.52 × 398,696.96
  4. Step 4: Simplify right side
    689,035.52x = 379,074,499,042.10
  5. Step 5: Solve for x
    x = 379,074,499,042.10/689,035.52
  6. Step 6: Final answer
    x = 550,152.33

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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.