Finding the Fourth Proportional to 2,153,416.76, 2,971,847.86 and 1,186,546.90
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Solution
The fourth proportional to 2,153,416.76, 2,971,847.86 and 1,186,546.90 is: 1,637,507.86
Step by Step Solution
- Step 1: Write the proportion equation
2,153,416.76 : 2,971,847.86 = 1,186,546.90 : x - Step 2: Convert to fraction form
2,153,416.76/2,971,847.86 = 1,186,546.90/x - Step 3: Cross multiply
2,153,416.76x = 2,971,847.86 × 1,186,546.90 - Step 4: Simplify right side
2,153,416.76x = 3,526,236,859,621.90 - Step 5: Solve for x
x = 3,526,236,859,621.90/2,153,416.76 - Step 6: Final answer
x = 1,637,507.86
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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.