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Finding the Fourth Proportional to 445,489.40, 668,234.10 and 401,252.60

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Solution

The fourth proportional to 445,489.40, 668,234.10 and 401,252.60 is: 601,878.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,489.40 : 668,234.10 = 401,252.60 : x
  2. Step 2: Convert to fraction form
    445,489.40/668,234.10 = 401,252.60/x
  3. Step 3: Cross multiply
    445,489.40x = 668,234.10 × 401,252.60
  4. Step 4: Simplify right side
    445,489.40x = 268,130,670,033.66
  5. Step 5: Solve for x
    x = 268,130,670,033.66/445,489.40
  6. Step 6: Final answer
    x = 601,878.90

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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.