Finding the Fourth Proportional to 5,390,068,138.40, 8,085,102,207.60 and 1,305,242,026.40
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Solution
The fourth proportional to 5,390,068,138.40, 8,085,102,207.60 and 1,305,242,026.40 is: 1,957,863,039.60
Step by Step Solution
- Step 1: Write the proportion equation
5,390,068,138.40 : 8,085,102,207.60 = 1,305,242,026.40 : x - Step 2: Convert to fraction form
5,390,068,138.40/8,085,102,207.60 = 1,305,242,026.40/x - Step 3: Cross multiply
5,390,068,138.40x = 8,085,102,207.60 × 1,305,242,026.40 - Step 4: Simplify right side
5,390,068,138.40x = 10,553,015,189,098,938,368 - Step 5: Solve for x
x = 10,553,015,189,098,938,368/5,390,068,138.40 - Step 6: Final answer
x = 1,957,863,039.60
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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.