Finding the Fourth Proportional to 665,581.12, 918,395.76 and 379,106.80
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Solution
The fourth proportional to 665,581.12, 918,395.76 and 379,106.80 is: 523,106.90
Step by Step Solution
- Step 1: Write the proportion equation
665,581.12 : 918,395.76 = 379,106.80 : x - Step 2: Convert to fraction form
665,581.12/918,395.76 = 379,106.80/x - Step 3: Cross multiply
665,581.12x = 918,395.76 × 379,106.80 - Step 4: Simplify right side
665,581.12x = 348,170,077,707.17 - Step 5: Solve for x
x = 348,170,077,707.17/665,581.12 - Step 6: Final answer
x = 523,106.90
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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.