Finding the Fourth Proportional to 640,309.91, 883,640.34 and 349,939.44
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Solution
The fourth proportional to 640,309.91, 883,640.34 and 349,939.44 is: 482,923.35
Step by Step Solution
- Step 1: Write the proportion equation
640,309.91 : 883,640.34 = 349,939.44 : x - Step 2: Convert to fraction form
640,309.91/883,640.34 = 349,939.44/x - Step 3: Cross multiply
640,309.91x = 883,640.34 × 349,939.44 - Step 4: Simplify right side
640,309.91x = 309,220,605,741.01 - Step 5: Solve for x
x = 309,220,605,741.01/640,309.91 - Step 6: Final answer
x = 482,923.35
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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.