Finding the Fourth Proportional to 926,215.35, 1,278,236.49 and 518,364.15
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Solution
The fourth proportional to 926,215.35, 1,278,236.49 and 518,364.15 is: 715,375.72
Step by Step Solution
- Step 1: Write the proportion equation
926,215.35 : 1,278,236.49 = 518,364.15 : x - Step 2: Convert to fraction form
926,215.35/1,278,236.49 = 518,364.15/x - Step 3: Cross multiply
926,215.35x = 1,278,236.49 × 518,364.15 - Step 4: Simplify right side
926,215.35x = 662,591,971,637.83 - Step 5: Solve for x
x = 662,591,971,637.83/926,215.35 - Step 6: Final answer
x = 715,375.72
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1.5x scale
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.