Finding the Fourth Proportional to 518,319.76, 715,284.84 and 288,891.84
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Solution
The fourth proportional to 518,319.76, 715,284.84 and 288,891.84 is: 398,672.73
Step by Step Solution
- Step 1: Write the proportion equation
518,319.76 : 715,284.84 = 288,891.84 : x - Step 2: Convert to fraction form
518,319.76/715,284.84 = 288,891.84/x - Step 3: Cross multiply
518,319.76x = 715,284.84 × 288,891.84 - Step 4: Simplify right side
518,319.76x = 206,639,953,551.71 - Step 5: Solve for x
x = 206,639,953,551.71/518,319.76 - Step 6: Final answer
x = 398,672.73
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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.