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Finding the Fourth Proportional to 498,893.99, 688,456.67 and 283,992.48

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Solution

The fourth proportional to 498,893.99, 688,456.67 and 283,992.48 is: 391,899.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,893.99 : 688,456.67 = 283,992.48 : x
  2. Step 2: Convert to fraction form
    498,893.99/688,456.67 = 283,992.48/x
  3. Step 3: Cross multiply
    498,893.99x = 688,456.67 × 283,992.48
  4. Step 4: Simplify right side
    498,893.99x = 195,516,515,665.88
  5. Step 5: Solve for x
    x = 195,516,515,665.88/498,893.99
  6. Step 6: Final answer
    x = 391,899.93

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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.