Finding the Fourth Proportional to 889,387,391.48, 1,227,354,716.59 and 492,935,976.68
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Solution
The fourth proportional to 889,387,391.48, 1,227,354,716.59 and 492,935,976.68 is: 680,251,712.30
Step by Step Solution
- Step 1: Write the proportion equation
889,387,391.48 : 1,227,354,716.59 = 492,935,976.68 : x - Step 2: Convert to fraction form
889,387,391.48/1,227,354,716.59 = 492,935,976.68/x - Step 3: Cross multiply
889,387,391.48x = 1,227,354,716.59 × 492,935,976.68 - Step 4: Simplify right side
889,387,391.48x = 605,007,295,947,727,232 - Step 5: Solve for x
x = 605,007,295,947,727,232/889,387,391.48 - Step 6: Final answer
x = 680,251,712.30
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Double scale
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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.