Finding the Fourth Proportional to 518,774.63, 715,909.01 and 280,310.63
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Solution
The fourth proportional to 518,774.63, 715,909.01 and 280,310.63 is: 386,828.68
Step by Step Solution
- Step 1: Write the proportion equation
518,774.63 : 715,909.01 = 280,310.63 : x - Step 2: Convert to fraction form
518,774.63/715,909.01 = 280,310.63/x - Step 3: Cross multiply
518,774.63x = 715,909.01 × 280,310.63 - Step 4: Simplify right side
518,774.63x = 200,676,902,737.01 - Step 5: Solve for x
x = 200,676,902,737.01/518,774.63 - Step 6: Final answer
x = 386,828.68
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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.