Finding the Fourth Proportional to 3,931,649,454.27, 5,425,640,306.80 and 2,147,502,372.09
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Solution
The fourth proportional to 3,931,649,454.27, 5,425,640,306.80 and 2,147,502,372.09 is: 2,963,533,642.68
Step by Step Solution
- Step 1: Write the proportion equation
3,931,649,454.27 : 5,425,640,306.80 = 2,147,502,372.09 : x - Step 2: Convert to fraction form
3,931,649,454.27/5,425,640,306.80 = 2,147,502,372.09/x - Step 3: Cross multiply
3,931,649,454.27x = 5,425,640,306.80 × 2,147,502,372.09 - Step 4: Simplify right side
3,931,649,454.27x = 11,651,575,428,947,015,680 - Step 5: Solve for x
x = 11,651,575,428,947,015,680/3,931,649,454.27 - Step 6: Final answer
x = 2,963,533,642.68
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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.