Finding the Fourth Proportional to 979,873,131.84, 1,351,316,616.49 and 715,135,790.40
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Solution
The fourth proportional to 979,873,131.84, 1,351,316,616.49 and 715,135,790.40 is: 986,224,486.84
Step by Step Solution
- Step 1: Write the proportion equation
979,873,131.84 : 1,351,316,616.49 = 715,135,790.40 : x - Step 2: Convert to fraction form
979,873,131.84/1,351,316,616.49 = 715,135,790.40/x - Step 3: Cross multiply
979,873,131.84x = 1,351,316,616.49 × 715,135,790.40 - Step 4: Simplify right side
979,873,131.84x = 966,374,876,614,229,760 - Step 5: Solve for x
x = 966,374,876,614,229,760/979,873,131.84 - Step 6: Final answer
x = 986,224,486.84
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1.5x scale
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.