Finding the Fourth Proportional to 1,351,844,201.79, 1,864,950,737.99 and 815,696,814.33
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Solution
The fourth proportional to 1,351,844,201.79, 1,864,950,737.99 and 815,696,814.33 is: 1,125,303,029.63
Step by Step Solution
- Step 1: Write the proportion equation
1,351,844,201.79 : 1,864,950,737.99 = 815,696,814.33 : x - Step 2: Convert to fraction form
1,351,844,201.79/1,864,950,737.99 = 815,696,814.33/x - Step 3: Cross multiply
1,351,844,201.79x = 1,864,950,737.99 × 815,696,814.33 - Step 4: Simplify right side
1,351,844,201.79x = 1,521,234,375,856,747,008 - Step 5: Solve for x
x = 1,521,234,375,856,747,008/1,351,844,201.79 - Step 6: Final answer
x = 1,125,303,029.63
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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.