Finding the Fourth Proportional to 7,656,136.80, 10,565,593.20 and 4,218,328.32
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Solution
The fourth proportional to 7,656,136.80, 10,565,593.20 and 4,218,328.32 is: 5,821,361.63
Step by Step Solution
- Step 1: Write the proportion equation
7,656,136.80 : 10,565,593.20 = 4,218,328.32 : x - Step 2: Convert to fraction form
7,656,136.80/10,565,593.20 = 4,218,328.32/x - Step 3: Cross multiply
7,656,136.80x = 10,565,593.20 × 4,218,328.32 - Step 4: Simplify right side
7,656,136.80x = 44,569,141,013,159.42 - Step 5: Solve for x
x = 44,569,141,013,159.42/7,656,136.80 - Step 6: Final answer
x = 5,821,361.63
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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.