Finding the Fourth Proportional to 777,413,151.68, 1,067,119,520.10 and 687,333,902.18
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Solution
The fourth proportional to 777,413,151.68, 1,067,119,520.10 and 687,333,902.18 is: 943,471,849.24
Step by Step Solution
- Step 1: Write the proportion equation
777,413,151.68 : 1,067,119,520.10 = 687,333,902.18 : x - Step 2: Convert to fraction form
777,413,151.68/1,067,119,520.10 = 687,333,902.18/x - Step 3: Cross multiply
777,413,151.68x = 1,067,119,520.10 × 687,333,902.18 - Step 4: Simplify right side
777,413,151.68x = 733,467,423,842,781,952 - Step 5: Solve for x
x = 733,467,423,842,781,952/777,413,151.68 - Step 6: Final answer
x = 943,471,849.24
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.