Finding the Fourth Proportional to 2,136,698.50, 2,948,636.10 and 1,218,926.14
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Solution
The fourth proportional to 2,136,698.50, 2,948,636.10 and 1,218,926.14 is: 1,682,113.61
Step by Step Solution
- Step 1: Write the proportion equation
2,136,698.50 : 2,948,636.10 = 1,218,926.14 : x - Step 2: Convert to fraction form
2,136,698.50/2,948,636.10 = 1,218,926.14/x - Step 3: Cross multiply
2,136,698.50x = 2,948,636.10 × 1,218,926.14 - Step 4: Simplify right side
2,136,698.50x = 3,594,169,619,637.65 - Step 5: Solve for x
x = 3,594,169,619,637.65/2,136,698.50 - Step 6: Final answer
x = 1,682,113.61
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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.