Finding the Fourth Proportional to 908,107,106.70, 1,253,187,759.27 and 490,419,351.75
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Solution
The fourth proportional to 908,107,106.70, 1,253,187,759.27 and 490,419,351.75 is: 676,778,679.51
Step by Step Solution
- Step 1: Write the proportion equation
908,107,106.70 : 1,253,187,759.27 = 490,419,351.75 : x - Step 2: Convert to fraction form
908,107,106.70/1,253,187,759.27 = 490,419,351.75/x - Step 3: Cross multiply
908,107,106.70x = 1,253,187,759.27 × 490,419,351.75 - Step 4: Simplify right side
908,107,106.70x = 614,587,528,522,228,480 - Step 5: Solve for x
x = 614,587,528,522,228,480/908,107,106.70 - Step 6: Final answer
x = 676,778,679.51
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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.