Finding the Fourth Proportional to 1,680,491,177.97, 2,319,081,091.27 and 927,805,809.19
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Solution
The fourth proportional to 1,680,491,177.97, 2,319,081,091.27 and 927,805,809.19 is: 1,280,373,819.67
Step by Step Solution
- Step 1: Write the proportion equation
1,680,491,177.97 : 2,319,081,091.27 = 927,805,809.19 : x - Step 2: Convert to fraction form
1,680,491,177.97/2,319,081,091.27 = 927,805,809.19/x - Step 3: Cross multiply
1,680,491,177.97x = 2,319,081,091.27 × 927,805,809.19 - Step 4: Simplify right side
1,680,491,177.97x = 2,151,656,908,462,990,592 - Step 5: Solve for x
x = 2,151,656,908,462,990,592/1,680,491,177.97 - Step 6: Final answer
x = 1,280,373,819.67
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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.