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Finding the Fourth Proportional to 629,960.40, 944,940.60 and 551,228.40

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Solution

The fourth proportional to 629,960.40, 944,940.60 and 551,228.40 is: 826,842.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,960.40 : 944,940.60 = 551,228.40 : x
  2. Step 2: Convert to fraction form
    629,960.40/944,940.60 = 551,228.40/x
  3. Step 3: Cross multiply
    629,960.40x = 944,940.60 × 551,228.40
  4. Step 4: Simplify right side
    629,960.40x = 520,878,095,033.04
  5. Step 5: Solve for x
    x = 520,878,095,033.04/629,960.40
  6. Step 6: Final answer
    x = 826,842.60

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Double scale
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Similar ratio
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1.5x scale

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.