Finding the Fourth Proportional to 7,778,912.64, 11,668,275.12 and 2,021,136.72
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Solution
The fourth proportional to 7,778,912.64, 11,668,275.12 and 2,021,136.72 is: 3,031,680.70
Step by Step Solution
- Step 1: Write the proportion equation
7,778,912.64 : 11,668,275.12 = 2,021,136.72 : x - Step 2: Convert to fraction form
7,778,912.64/11,668,275.12 = 2,021,136.72/x - Step 3: Cross multiply
7,778,912.64x = 11,668,275.12 × 2,021,136.72 - Step 4: Simplify right side
7,778,912.64x = 23,583,179,304,094.41 - Step 5: Solve for x
x = 23,583,179,304,094.41/7,778,912.64 - Step 6: Final answer
x = 3,031,680.70
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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.