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Finding the Fourth Proportional to 551,397,753.80, 827,096,630.70 and 509,307,626.60

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Solution

The fourth proportional to 551,397,753.80, 827,096,630.70 and 509,307,626.60 is: 763,961,439.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,397,753.80 : 827,096,630.70 = 509,307,626.60 : x
  2. Step 2: Convert to fraction form
    551,397,753.80/827,096,630.70 = 509,307,626.60/x
  3. Step 3: Cross multiply
    551,397,753.80x = 827,096,630.70 × 509,307,626.60
  4. Step 4: Simplify right side
    551,397,753.80x = 421,246,621,950,673,728
  5. Step 5: Solve for x
    x = 421,246,621,950,673,728/551,397,753.80
  6. Step 6: Final answer
    x = 763,961,439.90

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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.