Finding the Fourth Proportional to 7,242,805.20, 10,864,207.80 and 4,723,381.20
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Solution
The fourth proportional to 7,242,805.20, 10,864,207.80 and 4,723,381.20 is: 7,085,071.80
Step by Step Solution
- Step 1: Write the proportion equation
7,242,805.20 : 10,864,207.80 = 4,723,381.20 : x - Step 2: Convert to fraction form
7,242,805.20/10,864,207.80 = 4,723,381.20/x - Step 3: Cross multiply
7,242,805.20x = 10,864,207.80 × 4,723,381.20 - Step 4: Simplify right side
7,242,805.20x = 51,315,794,875,413.37 - Step 5: Solve for x
x = 51,315,794,875,413.37/7,242,805.20 - Step 6: Final answer
x = 7,085,071.80
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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.