Finding the Fourth Proportional to 911,838,843.68, 1,258,338,680.43 and 494,151,128.97
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Solution
The fourth proportional to 911,838,843.68, 1,258,338,680.43 and 494,151,128.97 is: 681,929,141.18
Step by Step Solution
- Step 1: Write the proportion equation
911,838,843.68 : 1,258,338,680.43 = 494,151,128.97 : x - Step 2: Convert to fraction form
911,838,843.68/1,258,338,680.43 = 494,151,128.97/x - Step 3: Cross multiply
911,838,843.68x = 1,258,338,680.43 × 494,151,128.97 - Step 4: Simplify right side
911,838,843.68x = 621,809,479,564,001,152 - Step 5: Solve for x
x = 621,809,479,564,001,152/911,838,843.68 - Step 6: Final answer
x = 681,929,141.18
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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.