Finding the Fourth Proportional to 865,163,855.20, 1,195,509,841.16 and 629,805,908.13
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Solution
The fourth proportional to 865,163,855.20, 1,195,509,841.16 and 629,805,908.13 is: 870,285,040.99
Step by Step Solution
- Step 1: Write the proportion equation
865,163,855.20 : 1,195,509,841.16 = 629,805,908.13 : x - Step 2: Convert to fraction form
865,163,855.20/1,195,509,841.16 = 629,805,908.13/x - Step 3: Cross multiply
865,163,855.20x = 1,195,509,841.16 × 629,805,908.13 - Step 4: Simplify right side
865,163,855.20x = 752,939,161,189,200,512 - Step 5: Solve for x
x = 752,939,161,189,200,512/865,163,855.20 - Step 6: Final answer
x = 870,285,040.99
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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.