Finding the Fourth Proportional to 1,165,338,644.96, 1,608,148,562.28 and 636,691,279.88
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Solution
The fourth proportional to 1,165,338,644.96, 1,608,148,562.28 and 636,691,279.88 is: 878,623,712.33
Step by Step Solution
- Step 1: Write the proportion equation
1,165,338,644.96 : 1,608,148,562.28 = 636,691,279.88 : x - Step 2: Convert to fraction form
1,165,338,644.96/1,608,148,562.28 = 636,691,279.88/x - Step 3: Cross multiply
1,165,338,644.96x = 1,608,148,562.28 × 636,691,279.88 - Step 4: Simplify right side
1,165,338,644.96x = 1,023,894,166,355,235,072 - Step 5: Solve for x
x = 1,023,894,166,355,235,072/1,165,338,644.96 - Step 6: Final answer
x = 878,623,712.33
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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.