Finding the Fourth Proportional to 518,366.28, 715,258.68 and 288,873.20
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Solution
The fourth proportional to 518,366.28, 715,258.68 and 288,873.20 is: 398,596.65
Step by Step Solution
- Step 1: Write the proportion equation
518,366.28 : 715,258.68 = 288,873.20 : x - Step 2: Convert to fraction form
518,366.28/715,258.68 = 288,873.20/x - Step 3: Cross multiply
518,366.28x = 715,258.68 × 288,873.20 - Step 4: Simplify right side
518,366.28x = 206,619,063,719.38 - Step 5: Solve for x
x = 206,619,063,719.38/518,366.28 - Step 6: Final answer
x = 398,596.65
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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.