Finding the Fourth Proportional to 640,113.15, 883,349.49 and 353,614.53
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Solution
The fourth proportional to 640,113.15, 883,349.49 and 353,614.53 is: 487,984.37
Step by Step Solution
- Step 1: Write the proportion equation
640,113.15 : 883,349.49 = 353,614.53 : x - Step 2: Convert to fraction form
640,113.15/883,349.49 = 353,614.53/x - Step 3: Cross multiply
640,113.15x = 883,349.49 × 353,614.53 - Step 4: Simplify right side
640,113.15x = 312,365,214,732.09 - Step 5: Solve for x
x = 312,365,214,732.09/640,113.15 - Step 6: Final answer
x = 487,984.37
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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.