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Finding the Fourth Proportional to 618,366,912.60, 927,550,368.90 and 521,511,790.35

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Solution

The fourth proportional to 618,366,912.60, 927,550,368.90 and 521,511,790.35 is: 782,267,685.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,366,912.60 : 927,550,368.90 = 521,511,790.35 : x
  2. Step 2: Convert to fraction form
    618,366,912.60/927,550,368.90 = 521,511,790.35/x
  3. Step 3: Cross multiply
    618,366,912.60x = 927,550,368.90 × 521,511,790.35
  4. Step 4: Simplify right side
    618,366,912.60x = 483,728,453,524,841,984
  5. Step 5: Solve for x
    x = 483,728,453,524,841,984/618,366,912.60
  6. Step 6: Final answer
    x = 782,267,685.53

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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.