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Finding the Fourth Proportional to 618,192,002.80, 927,288,004.20 and 436,793,474.80

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Solution

The fourth proportional to 618,192,002.80, 927,288,004.20 and 436,793,474.80 is: 655,190,212.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,192,002.80 : 927,288,004.20 = 436,793,474.80 : x
  2. Step 2: Convert to fraction form
    618,192,002.80/927,288,004.20 = 436,793,474.80/x
  3. Step 3: Cross multiply
    618,192,002.80x = 927,288,004.20 × 436,793,474.80
  4. Step 4: Simplify right side
    618,192,002.80x = 405,033,349,494,875,008
  5. Step 5: Solve for x
    x = 405,033,349,494,875,008/618,192,002.80
  6. Step 6: Final answer
    x = 655,190,212.20

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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.