Finding the Fourth Proportional to 10,382,590.40, 15,566,512.80 and 3,990,372.80
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Solution
The fourth proportional to 10,382,590.40, 15,566,512.80 and 3,990,372.80 is: 5,982,725.59
Step by Step Solution
- Step 1: Write the proportion equation
10,382,590.40 : 15,566,512.80 = 3,990,372.80 : x - Step 2: Convert to fraction form
10,382,590.40/15,566,512.80 = 3,990,372.80/x - Step 3: Cross multiply
10,382,590.40x = 15,566,512.80 × 3,990,372.80 - Step 4: Simplify right side
10,382,590.40x = 62,116,189,267,971.84 - Step 5: Solve for x
x = 62,116,189,267,971.84/10,382,590.40 - Step 6: Final answer
x = 5,982,725.59
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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.