Finding the Fourth Proportional to 918,685.68, 1,267,924.13 and 661,414.19
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Solution
The fourth proportional to 918,685.68, 1,267,924.13 and 661,414.19 is: 912,850.85
Step by Step Solution
- Step 1: Write the proportion equation
918,685.68 : 1,267,924.13 = 661,414.19 : x - Step 2: Convert to fraction form
918,685.68/1,267,924.13 = 661,414.19/x - Step 3: Cross multiply
918,685.68x = 1,267,924.13 × 661,414.19 - Step 4: Simplify right side
918,685.68x = 838,623,001,778.71 - Step 5: Solve for x
x = 838,623,001,778.71/918,685.68 - Step 6: Final answer
x = 912,850.85
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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.