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Finding the Fourth Proportional to 502,436.70, 693,354.78 and 276,077.34

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Solution

The fourth proportional to 502,436.70, 693,354.78 and 276,077.34 is: 380,982.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,436.70 : 693,354.78 = 276,077.34 : x
  2. Step 2: Convert to fraction form
    502,436.70/693,354.78 = 276,077.34/x
  3. Step 3: Cross multiply
    502,436.70x = 693,354.78 × 276,077.34
  4. Step 4: Simplify right side
    502,436.70x = 191,419,543,338.69
  5. Step 5: Solve for x
    x = 191,419,543,338.69/502,436.70
  6. Step 6: Final answer
    x = 380,982.41

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1.5x scale

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.