Home / 825,890,969.25-1,139,759,611.56-449,529,379.29

Finding the Fourth Proportional to 825,890,969.25, 1,139,759,611.56 and 449,529,379.29

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Solution

The fourth proportional to 825,890,969.25, 1,139,759,611.56 and 449,529,379.29 is: 620,366,912.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,890,969.25 : 1,139,759,611.56 = 449,529,379.29 : x
  2. Step 2: Convert to fraction form
    825,890,969.25/1,139,759,611.56 = 449,529,379.29/x
  3. Step 3: Cross multiply
    825,890,969.25x = 1,139,759,611.56 × 449,529,379.29
  4. Step 4: Simplify right side
    825,890,969.25x = 512,355,430,724,378,304
  5. Step 5: Solve for x
    x = 512,355,430,724,378,304/825,890,969.25
  6. Step 6: Final answer
    x = 620,366,912.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.