Finding the Fourth Proportional to 1,644,236,838.93, 2,269,044,409.82 and 891,548,646.71
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Solution
The fourth proportional to 1,644,236,838.93, 2,269,044,409.82 and 891,548,646.71 is: 1,230,335,815.98
Step by Step Solution
- Step 1: Write the proportion equation
1,644,236,838.93 : 2,269,044,409.82 = 891,548,646.71 : x - Step 2: Convert to fraction form
1,644,236,838.93/2,269,044,409.82 = 891,548,646.71/x - Step 3: Cross multiply
1,644,236,838.93x = 2,269,044,409.82 × 891,548,646.71 - Step 4: Simplify right side
1,644,236,838.93x = 2,022,963,472,884,108,800 - Step 5: Solve for x
x = 2,022,963,472,884,108,800/1,644,236,838.93 - Step 6: Final answer
x = 1,230,335,815.98
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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.