Finding the Fourth Proportional to 7,188,718,006.22, 9,921,416,345.65 and 4,136,831,565.23
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Solution
The fourth proportional to 7,188,718,006.22, 9,921,416,345.65 and 4,136,831,565.23 is: 5,709,394,675.80
Step by Step Solution
- Step 1: Write the proportion equation
7,188,718,006.22 : 9,921,416,345.65 = 4,136,831,565.23 : x - Step 2: Convert to fraction form
7,188,718,006.22/9,921,416,345.65 = 4,136,831,565.23/x - Step 3: Cross multiply
7,188,718,006.22x = 9,921,416,345.65 × 4,136,831,565.23 - Step 4: Simplify right side
7,188,718,006.22x = 41,043,228,310,503,563,264 - Step 5: Solve for x
x = 41,043,228,310,503,563,264/7,188,718,006.22 - Step 6: Final answer
x = 5,709,394,675.80
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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.