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Finding the Fourth Proportional to 551,168,993.80, 826,753,490.70 and 486,598,912.30

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Solution

The fourth proportional to 551,168,993.80, 826,753,490.70 and 486,598,912.30 is: 729,898,368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,168,993.80 : 826,753,490.70 = 486,598,912.30 : x
  2. Step 2: Convert to fraction form
    551,168,993.80/826,753,490.70 = 486,598,912.30/x
  3. Step 3: Cross multiply
    551,168,993.80x = 826,753,490.70 × 486,598,912.30
  4. Step 4: Simplify right side
    551,168,993.80x = 402,297,349,314,848,192
  5. Step 5: Solve for x
    x = 402,297,349,314,848,192/551,168,993.80
  6. Step 6: Final answer
    x = 729,898,368.45

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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.