Finding the Fourth Proportional to 612,727.74, 918,531.36 and 257,766.84
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Solution
The fourth proportional to 612,727.74, 918,531.36 and 257,766.84 is: 386,414.57
Step by Step Solution
- Step 1: Write the proportion equation
612,727.74 : 918,531.36 = 257,766.84 : x - Step 2: Convert to fraction form
612,727.74/918,531.36 = 257,766.84/x - Step 3: Cross multiply
612,727.74x = 918,531.36 × 257,766.84 - Step 4: Simplify right side
612,727.74x = 236,766,926,108.10 - Step 5: Solve for x
x = 236,766,926,108.10/612,727.74 - Step 6: Final answer
x = 386,414.57
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.