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Finding the Fourth Proportional to 489,276.40, 733,914.60 and 427,068.40

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Solution

The fourth proportional to 489,276.40, 733,914.60 and 427,068.40 is: 640,602.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,276.40 : 733,914.60 = 427,068.40 : x
  2. Step 2: Convert to fraction form
    489,276.40/733,914.60 = 427,068.40/x
  3. Step 3: Cross multiply
    489,276.40x = 733,914.60 × 427,068.40
  4. Step 4: Simplify right side
    489,276.40x = 313,431,733,958.64
  5. Step 5: Solve for x
    x = 313,431,733,958.64/489,276.40
  6. Step 6: Final answer
    x = 640,602.60

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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.