Finding the Fourth Proportional to 7,739,387.80, 11,609,081.70 and 1,982,110.30
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Solution
The fourth proportional to 7,739,387.80, 11,609,081.70 and 1,982,110.30 is: 2,973,165.45
Step by Step Solution
- Step 1: Write the proportion equation
7,739,387.80 : 11,609,081.70 = 1,982,110.30 : x - Step 2: Convert to fraction form
7,739,387.80/11,609,081.70 = 1,982,110.30/x - Step 3: Cross multiply
7,739,387.80x = 11,609,081.70 × 1,982,110.30 - Step 4: Simplify right side
7,739,387.80x = 23,010,480,411,111.51 - Step 5: Solve for x
x = 23,010,480,411,111.51/7,739,387.80 - Step 6: Final answer
x = 2,973,165.45
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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.