Finding the Fourth Proportional to 6,438,543,691.20, 9,657,815,536.80 and 5,275,325,630.40
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Solution
The fourth proportional to 6,438,543,691.20, 9,657,815,536.80 and 5,275,325,630.40 is: 7,912,988,445.60
Step by Step Solution
- Step 1: Write the proportion equation
6,438,543,691.20 : 9,657,815,536.80 = 5,275,325,630.40 : x - Step 2: Convert to fraction form
6,438,543,691.20/9,657,815,536.80 = 5,275,325,630.40/x - Step 3: Cross multiply
6,438,543,691.20x = 9,657,815,536.80 × 5,275,325,630.40 - Step 4: Simplify right side
6,438,543,691.20x = 50,948,121,834,956,365,824 - Step 5: Solve for x
x = 50,948,121,834,956,365,824/6,438,543,691.20 - Step 6: Final answer
x = 7,912,988,445.60
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1.5x scale
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.