Finding the Fourth Proportional to 1,680,474,379.67, 2,319,257,999.12 and 956,438,344.33
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Solution
The fourth proportional to 1,680,474,379.67, 2,319,257,999.12 and 956,438,344.33 is: 1,320,000,654.33
Step by Step Solution
- Step 1: Write the proportion equation
1,680,474,379.67 : 2,319,257,999.12 = 956,438,344.33 : x - Step 2: Convert to fraction form
1,680,474,379.67/2,319,257,999.12 = 956,438,344.33/x - Step 3: Cross multiply
1,680,474,379.67x = 2,319,257,999.12 × 956,438,344.33 - Step 4: Simplify right side
1,680,474,379.67x = 2,218,227,280,752,441,344 - Step 5: Solve for x
x = 2,218,227,280,752,441,344/1,680,474,379.67 - Step 6: Final answer
x = 1,320,000,654.33
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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.