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Finding the Fourth Proportional to 489,318.40, 733,977.60 and 445,772.80

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Solution

The fourth proportional to 489,318.40, 733,977.60 and 445,772.80 is: 668,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,318.40 : 733,977.60 = 445,772.80 : x
  2. Step 2: Convert to fraction form
    489,318.40/733,977.60 = 445,772.80/x
  3. Step 3: Cross multiply
    489,318.40x = 733,977.60 × 445,772.80
  4. Step 4: Simplify right side
    489,318.40x = 327,187,249,889.28
  5. Step 5: Solve for x
    x = 327,187,249,889.28/489,318.40
  6. Step 6: Final answer
    x = 668,659.20

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Similar ratio
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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.