Finding the Fourth Proportional to 686,394,121.68, 1,029,203,437.05 and 627,826,998.51
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Solution
The fourth proportional to 686,394,121.68, 1,029,203,437.05 and 627,826,998.51 is: 941,385,836.98
Step by Step Solution
- Step 1: Write the proportion equation
686,394,121.68 : 1,029,203,437.05 = 627,826,998.51 : x - Step 2: Convert to fraction form
686,394,121.68/1,029,203,437.05 = 627,826,998.51/x - Step 3: Cross multiply
686,394,121.68x = 1,029,203,437.05 × 627,826,998.51 - Step 4: Simplify right side
686,394,121.68x = 646,161,704,739,277,184 - Step 5: Solve for x
x = 646,161,704,739,277,184/686,394,121.68 - Step 6: Final answer
x = 941,385,836.98
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.