Finding the Fourth Proportional to 640,151.96, 883,418.99 and 353,678.64
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Solution
The fourth proportional to 640,151.96, 883,418.99 and 353,678.64 is: 488,081.65
Step by Step Solution
- Step 1: Write the proportion equation
640,151.96 : 883,418.99 = 353,678.64 : x - Step 2: Convert to fraction form
640,151.96/883,418.99 = 353,678.64/x - Step 3: Cross multiply
640,151.96x = 883,418.99 × 353,678.64 - Step 4: Simplify right side
640,151.96x = 312,446,425,164.98 - Step 5: Solve for x
x = 312,446,425,164.98/640,151.96 - Step 6: Final answer
x = 488,081.65
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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.