Finding the Fourth Proportional to 1,212,442,557.58, 1,673,167,582.44 and 676,588,604.14
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Solution
The fourth proportional to 1,212,442,557.58, 1,673,167,582.44 and 676,588,604.14 is: 933,690,517.56
Step by Step Solution
- Step 1: Write the proportion equation
1,212,442,557.58 : 1,673,167,582.44 = 676,588,604.14 : x - Step 2: Convert to fraction form
1,212,442,557.58/1,673,167,582.44 = 676,588,604.14/x - Step 3: Cross multiply
1,212,442,557.58x = 1,673,167,582.44 × 676,588,604.14 - Step 4: Simplify right side
1,212,442,557.58x = 1,132,046,119,095,378,048 - Step 5: Solve for x
x = 1,132,046,119,095,378,048/1,212,442,557.58 - Step 6: Final answer
x = 933,690,517.56
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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.