Finding the Fourth Proportional to 1,215,838,616.45, 1,678,680,926.66 and 770,197,446.41
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Solution
The fourth proportional to 1,215,838,616.45, 1,678,680,926.66 and 770,197,446.41 is: 1,063,394,224.82
Step by Step Solution
- Step 1: Write the proportion equation
1,215,838,616.45 : 1,678,680,926.66 = 770,197,446.41 : x - Step 2: Convert to fraction form
1,215,838,616.45/1,678,680,926.66 = 770,197,446.41/x - Step 3: Cross multiply
1,215,838,616.45x = 1,678,680,926.66 × 770,197,446.41 - Step 4: Simplify right side
1,215,838,616.45x = 1,292,915,763,046,853,376 - Step 5: Solve for x
x = 1,292,915,763,046,853,376/1,215,838,616.45 - Step 6: Final answer
x = 1,063,394,224.82
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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.