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Finding the Fourth Proportional to 618,192,004.80, 927,288,007.20 and 436,793,476.80

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Solution

The fourth proportional to 618,192,004.80, 927,288,007.20 and 436,793,476.80 is: 655,190,215.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,192,004.80 : 927,288,007.20 = 436,793,476.80 : x
  2. Step 2: Convert to fraction form
    618,192,004.80/927,288,007.20 = 436,793,476.80/x
  3. Step 3: Cross multiply
    618,192,004.80x = 927,288,007.20 × 436,793,476.80
  4. Step 4: Simplify right side
    618,192,004.80x = 405,033,352,659,831,488
  5. Step 5: Solve for x
    x = 405,033,352,659,831,488/618,192,004.80
  6. Step 6: Final answer
    x = 655,190,215.20

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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.