Finding the Fourth Proportional to 640,116.15, 883,353.63 and 353,617.53
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Solution
The fourth proportional to 640,116.15, 883,353.63 and 353,617.53 is: 487,988.51
Step by Step Solution
- Step 1: Write the proportion equation
640,116.15 : 883,353.63 = 353,617.53 : x - Step 2: Convert to fraction form
640,116.15/883,353.63 = 353,617.53/x - Step 3: Cross multiply
640,116.15x = 883,353.63 × 353,617.53 - Step 4: Simplify right side
640,116.15x = 312,369,328,757.13 - Step 5: Solve for x
x = 312,369,328,757.13/640,116.15 - Step 6: Final answer
x = 487,988.51
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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.