Finding the Fourth Proportional to 2,136,873.18, 2,948,885.69 and 1,170,064.74
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Solution
The fourth proportional to 2,136,873.18, 2,948,885.69 and 1,170,064.74 is: 1,614,689.72
Step by Step Solution
- Step 1: Write the proportion equation
2,136,873.18 : 2,948,885.69 = 1,170,064.74 : x - Step 2: Convert to fraction form
2,136,873.18/2,948,885.69 = 1,170,064.74/x - Step 3: Cross multiply
2,136,873.18x = 2,948,885.69 × 1,170,064.74 - Step 4: Simplify right side
2,136,873.18x = 3,450,387,162,309.25 - Step 5: Solve for x
x = 3,450,387,162,309.25/2,136,873.18 - Step 6: Final answer
x = 1,614,689.72
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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.