Finding the Fourth Proportional to 873,420,194.43, 1,309,692,191.81 and 290,949,660.99
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Solution
The fourth proportional to 873,420,194.43, 1,309,692,191.81 and 290,949,660.99 is: 436,278,553.71
Step by Step Solution
- Step 1: Write the proportion equation
873,420,194.43 : 1,309,692,191.81 = 290,949,660.99 : x - Step 2: Convert to fraction form
873,420,194.43/1,309,692,191.81 = 290,949,660.99/x - Step 3: Cross multiply
873,420,194.43x = 1,309,692,191.81 × 290,949,660.99 - Step 4: Simplify right side
873,420,194.43x = 381,054,499,206,914,816 - Step 5: Solve for x
x = 381,054,499,206,914,816/873,420,194.43 - Step 6: Final answer
x = 436,278,553.71
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1.5x scale
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.