Finding the Fourth Proportional to 1,579,594,969.67, 2,179,909,579.75 and 874,746,951.21
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Solution
The fourth proportional to 1,579,594,969.67, 2,179,909,579.75 and 874,746,951.21 is: 1,207,188,738.52
Step by Step Solution
- Step 1: Write the proportion equation
1,579,594,969.67 : 2,179,909,579.75 = 874,746,951.21 : x - Step 2: Convert to fraction form
1,579,594,969.67/2,179,909,579.75 = 874,746,951.21/x - Step 3: Cross multiply
1,579,594,969.67x = 2,179,909,579.75 × 874,746,951.21 - Step 4: Simplify right side
1,579,594,969.67x = 1,906,869,258,797,597,952 - Step 5: Solve for x
x = 1,906,869,258,797,597,952/1,579,594,969.67 - Step 6: Final answer
x = 1,207,188,738.52
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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.