Finding the Fourth Proportional to 2,126,038,468.60, 3,189,057,702.90 and 979,420,612.60
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Solution
The fourth proportional to 2,126,038,468.60, 3,189,057,702.90 and 979,420,612.60 is: 1,469,130,918.90
Step by Step Solution
- Step 1: Write the proportion equation
2,126,038,468.60 : 3,189,057,702.90 = 979,420,612.60 : x - Step 2: Convert to fraction form
2,126,038,468.60/3,189,057,702.90 = 979,420,612.60/x - Step 3: Cross multiply
2,126,038,468.60x = 3,189,057,702.90 × 979,420,612.60 - Step 4: Simplify right side
2,126,038,468.60x = 3,123,428,848,991,067,136 - Step 5: Solve for x
x = 3,123,428,848,991,067,136/2,126,038,468.60 - Step 6: Final answer
x = 1,469,130,918.90
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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.