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Finding the Fourth Proportional to 499,837.67, 689,058.45 and 356,348.60

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Solution

The fourth proportional to 499,837.67, 689,058.45 and 356,348.60 is: 491,249.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,837.67 : 689,058.45 = 356,348.60 : x
  2. Step 2: Convert to fraction form
    499,837.67/689,058.45 = 356,348.60/x
  3. Step 3: Cross multiply
    499,837.67x = 689,058.45 × 356,348.60
  4. Step 4: Simplify right side
    499,837.67x = 245,545,013,975.67
  5. Step 5: Solve for x
    x = 245,545,013,975.67/499,837.67
  6. Step 6: Final answer
    x = 491,249.52

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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.