Finding the Fourth Proportional to 3,998,430.75, 5,512,095.18 and 2,850,518.19
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Solution
The fourth proportional to 3,998,430.75, 5,512,095.18 and 2,850,518.19 is: 3,929,623.53
Step by Step Solution
- Step 1: Write the proportion equation
3,998,430.75 : 5,512,095.18 = 2,850,518.19 : x - Step 2: Convert to fraction form
3,998,430.75/5,512,095.18 = 2,850,518.19/x - Step 3: Cross multiply
3,998,430.75x = 5,512,095.18 × 2,850,518.19 - Step 4: Simplify right side
3,998,430.75x = 15,712,327,575,601.32 - Step 5: Solve for x
x = 15,712,327,575,601.32/3,998,430.75 - Step 6: Final answer
x = 3,929,623.53
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.