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Finding the Fourth Proportional to 502,783.78, 693,823.89 and 276,427.54

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Solution

The fourth proportional to 502,783.78, 693,823.89 and 276,427.54 is: 381,460.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,783.78 : 693,823.89 = 276,427.54 : x
  2. Step 2: Convert to fraction form
    502,783.78/693,823.89 = 276,427.54/x
  3. Step 3: Cross multiply
    502,783.78x = 693,823.89 × 276,427.54
  4. Step 4: Simplify right side
    502,783.78x = 191,792,031,105.93
  5. Step 5: Solve for x
    x = 191,792,031,105.93/502,783.78
  6. Step 6: Final answer
    x = 381,460.26

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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.