Finding the Fourth Proportional to 839,809,107.20, 1,259,713,660.80 and 759,187,539.20
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Solution
The fourth proportional to 839,809,107.20, 1,259,713,660.80 and 759,187,539.20 is: 1,138,781,308.80
Step by Step Solution
- Step 1: Write the proportion equation
839,809,107.20 : 1,259,713,660.80 = 759,187,539.20 : x - Step 2: Convert to fraction form
839,809,107.20/1,259,713,660.80 = 759,187,539.20/x - Step 3: Cross multiply
839,809,107.20x = 1,259,713,660.80 × 759,187,539.20 - Step 4: Simplify right side
839,809,107.20x = 956,358,914,239,375,488 - Step 5: Solve for x
x = 956,358,914,239,375,488/839,809,107.20 - Step 6: Final answer
x = 1,138,781,308.80
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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.