Finding the Fourth Proportional to 659,778.13, 910,439.35 and 387,857.49
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Solution
The fourth proportional to 659,778.13, 910,439.35 and 387,857.49 is: 535,211.32
Step by Step Solution
- Step 1: Write the proportion equation
659,778.13 : 910,439.35 = 387,857.49 : x - Step 2: Convert to fraction form
659,778.13/910,439.35 = 387,857.49/x - Step 3: Cross multiply
659,778.13x = 910,439.35 × 387,857.49 - Step 4: Simplify right side
659,778.13x = 353,120,721,088.23 - Step 5: Solve for x
x = 353,120,721,088.23/659,778.13 - Step 6: Final answer
x = 535,211.32
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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.