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Finding the Fourth Proportional to 489,322.40, 733,983.60 and 427,114.40

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Solution

The fourth proportional to 489,322.40, 733,983.60 and 427,114.40 is: 640,671.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,322.40 : 733,983.60 = 427,114.40 : x
  2. Step 2: Convert to fraction form
    489,322.40/733,983.60 = 427,114.40/x
  3. Step 3: Cross multiply
    489,322.40x = 733,983.60 × 427,114.40
  4. Step 4: Simplify right side
    489,322.40x = 313,494,964,923.84
  5. Step 5: Solve for x
    x = 313,494,964,923.84/489,322.40
  6. Step 6: Final answer
    x = 640,671.60

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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.