Finding the Fourth Proportional to 926,215.38, 1,278,245.88 and 518,358.06
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Solution
The fourth proportional to 926,215.38, 1,278,245.88 and 518,358.06 is: 715,372.55
Step by Step Solution
- Step 1: Write the proportion equation
926,215.38 : 1,278,245.88 = 518,358.06 : x - Step 2: Convert to fraction form
926,215.38/1,278,245.88 = 518,358.06/x - Step 3: Cross multiply
926,215.38x = 1,278,245.88 × 518,358.06 - Step 4: Simplify right side
926,215.38x = 662,589,054,559.79 - Step 5: Solve for x
x = 662,589,054,559.79/926,215.38 - Step 6: Final answer
x = 715,372.55
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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.