Finding the Fourth Proportional to 2,136,495.20, 2,948,644.04 and 1,218,513.91
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Solution
The fourth proportional to 2,136,495.20, 2,948,644.04 and 1,218,513.91 is: 1,681,709.26
Step by Step Solution
- Step 1: Write the proportion equation
2,136,495.20 : 2,948,644.04 = 1,218,513.91 : x - Step 2: Convert to fraction form
2,136,495.20/2,948,644.04 = 1,218,513.91/x - Step 3: Cross multiply
2,136,495.20x = 2,948,644.04 × 1,218,513.91 - Step 4: Simplify right side
2,136,495.20x = 3,592,963,767,199.13 - Step 5: Solve for x
x = 3,592,963,767,199.13/2,136,495.20 - Step 6: Final answer
x = 1,681,709.26
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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.