Finding the Fourth Proportional to 1,866,521.20, 2,799,781.80 and 921,737.20
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Solution
The fourth proportional to 1,866,521.20, 2,799,781.80 and 921,737.20 is: 1,382,605.80
Step by Step Solution
- Step 1: Write the proportion equation
1,866,521.20 : 2,799,781.80 = 921,737.20 : x - Step 2: Convert to fraction form
1,866,521.20/2,799,781.80 = 921,737.20/x - Step 3: Cross multiply
1,866,521.20x = 2,799,781.80 × 921,737.20 - Step 4: Simplify right side
1,866,521.20x = 2,580,663,036,942.96 - Step 5: Solve for x
x = 2,580,663,036,942.96/1,866,521.20 - Step 6: Final answer
x = 1,382,605.80
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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.