Finding the Fourth Proportional to 1,277,586,079.48, 1,916,532,107.16 and 392,155,460.08
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Solution
The fourth proportional to 1,277,586,079.48, 1,916,532,107.16 and 392,155,460.08 is: 588,280,149.82
Step by Step Solution
- Step 1: Write the proportion equation
1,277,586,079.48 : 1,916,532,107.16 = 392,155,460.08 : x - Step 2: Convert to fraction form
1,277,586,079.48/1,916,532,107.16 = 392,155,460.08/x - Step 3: Cross multiply
1,277,586,079.48x = 1,916,532,107.16 × 392,155,460.08 - Step 4: Simplify right side
1,277,586,079.48x = 751,578,530,241,421,696 - Step 5: Solve for x
x = 751,578,530,241,421,696/1,277,586,079.48 - Step 6: Final answer
x = 588,280,149.82
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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.