Finding the Fourth Proportional to 640,116.23, 883,296.38 and 353,617.88
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Solution
The fourth proportional to 640,116.23, 883,296.38 and 353,617.88 is: 487,957.31
Step by Step Solution
- Step 1: Write the proportion equation
640,116.23 : 883,296.38 = 353,617.88 : x - Step 2: Convert to fraction form
640,116.23/883,296.38 = 353,617.88/x - Step 3: Cross multiply
640,116.23x = 883,296.38 × 353,617.88 - Step 4: Simplify right side
640,116.23x = 312,349,391,539.19 - Step 5: Solve for x
x = 312,349,391,539.19/640,116.23 - Step 6: Final answer
x = 487,957.31
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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.