Finding the Fourth Proportional to 12,127,971.40, 18,192,248.70 and 3,608,585.80
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Solution
The fourth proportional to 12,127,971.40, 18,192,248.70 and 3,608,585.80 is: 5,412,965.46
Step by Step Solution
- Step 1: Write the proportion equation
12,127,971.40 : 18,192,248.70 = 3,608,585.80 : x - Step 2: Convert to fraction form
12,127,971.40/18,192,248.70 = 3,608,585.80/x - Step 3: Cross multiply
12,127,971.40x = 18,192,248.70 × 3,608,585.80 - Step 4: Simplify right side
12,127,971.40x = 65,648,290,328,888.45 - Step 5: Solve for x
x = 65,648,290,328,888.45/12,127,971.40 - Step 6: Final answer
x = 5,412,965.46
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1.5x scale
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.