Finding the Fourth Proportional to 1,116,921,694.60, 1,541,333,133.84 and 615,177,202.15
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Solution
The fourth proportional to 1,116,921,694.60, 1,541,333,133.84 and 615,177,202.15 is: 848,934,181.72
Step by Step Solution
- Step 1: Write the proportion equation
1,116,921,694.60 : 1,541,333,133.84 = 615,177,202.15 : x - Step 2: Convert to fraction form
1,116,921,694.60/1,541,333,133.84 = 615,177,202.15/x - Step 3: Cross multiply
1,116,921,694.60x = 1,541,333,133.84 × 615,177,202.15 - Step 4: Simplify right side
1,116,921,694.60x = 948,193,004,852,929,408 - Step 5: Solve for x
x = 948,193,004,852,929,408/1,116,921,694.60 - Step 6: Final answer
x = 848,934,181.72
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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.