Finding the Fourth Proportional to 518,599.25, 715,666.99 and 280,135.25
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Solution
The fourth proportional to 518,599.25, 715,666.99 and 280,135.25 is: 386,586.66
Step by Step Solution
- Step 1: Write the proportion equation
518,599.25 : 715,666.99 = 280,135.25 : x - Step 2: Convert to fraction form
518,599.25/715,666.99 = 280,135.25/x - Step 3: Cross multiply
518,599.25x = 715,666.99 × 280,135.25 - Step 4: Simplify right side
518,599.25x = 200,483,549,759.72 - Step 5: Solve for x
x = 200,483,549,759.72/518,599.25 - Step 6: Final answer
x = 386,586.66
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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.