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Finding the Fourth Proportional to 400,618.90, 600,987.73 and 116,311.78

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Solution

The fourth proportional to 400,618.90, 600,987.73 and 116,311.78 is: 174,484.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,618.90 : 600,987.73 = 116,311.78 : x
  2. Step 2: Convert to fraction form
    400,618.90/600,987.73 = 116,311.78/x
  3. Step 3: Cross multiply
    400,618.90x = 600,987.73 × 116,311.78
  4. Step 4: Simplify right side
    400,618.90x = 69,901,950,841.21
  5. Step 5: Solve for x
    x = 69,901,950,841.21/400,618.90
  6. Step 6: Final answer
    x = 174,484.91

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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.