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Finding the Fourth Proportional to 422,878.92, 634,859.62 and 363,288.63

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Solution

The fourth proportional to 422,878.92, 634,859.62 and 363,288.63 is: 545,397.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,878.92 : 634,859.62 = 363,288.63 : x
  2. Step 2: Convert to fraction form
    422,878.92/634,859.62 = 363,288.63/x
  3. Step 3: Cross multiply
    422,878.92x = 634,859.62 × 363,288.63
  4. Step 4: Simplify right side
    422,878.92x = 230,637,283,575.50
  5. Step 5: Solve for x
    x = 230,637,283,575.50/422,878.92
  6. Step 6: Final answer
    x = 545,397.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.