Finding the Fourth Proportional to 1,210,157,553.19, 1,815,764,324.61 and 423,775,617.64
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Solution
The fourth proportional to 1,210,157,553.19, 1,815,764,324.61 and 423,775,617.64 is: 635,848,320.84
Step by Step Solution
- Step 1: Write the proportion equation
1,210,157,553.19 : 1,815,764,324.61 = 423,775,617.64 : x - Step 2: Convert to fraction form
1,210,157,553.19/1,815,764,324.61 = 423,775,617.64/x - Step 3: Cross multiply
1,210,157,553.19x = 1,815,764,324.61 × 423,775,617.64 - Step 4: Simplify right side
1,210,157,553.19x = 769,476,648,150,280,192 - Step 5: Solve for x
x = 769,476,648,150,280,192/1,210,157,553.19 - Step 6: Final answer
x = 635,848,320.84
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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.