Home / 639,669.78-882,717.62-349,258.05

Finding the Fourth Proportional to 639,669.78, 882,717.62 and 349,258.05

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Solution

The fourth proportional to 639,669.78, 882,717.62 and 349,258.05 is: 481,961.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,669.78 : 882,717.62 = 349,258.05 : x
  2. Step 2: Convert to fraction form
    639,669.78/882,717.62 = 349,258.05/x
  3. Step 3: Cross multiply
    639,669.78x = 882,717.62 × 349,258.05
  4. Step 4: Simplify right side
    639,669.78x = 308,296,232,915.55
  5. Step 5: Solve for x
    x = 308,296,232,915.55/639,669.78
  6. Step 6: Final answer
    x = 481,961.54

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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.