Finding the Fourth Proportional to 518,342.19, 715,319.39 and 288,893.09
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Solution
The fourth proportional to 518,342.19, 715,319.39 and 288,893.09 is: 398,676.45
Step by Step Solution
- Step 1: Write the proportion equation
518,342.19 : 715,319.39 = 288,893.09 : x - Step 2: Convert to fraction form
518,342.19/715,319.39 = 288,893.09/x - Step 3: Cross multiply
518,342.19x = 715,319.39 × 288,893.09 - Step 4: Simplify right side
518,342.19x = 206,650,823,892.95 - Step 5: Solve for x
x = 206,650,823,892.95/518,342.19 - Step 6: Final answer
x = 398,676.45
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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.