Finding the Fourth Proportional to 640,669.95, 884,142.99 and 354,208.49
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Solution
The fourth proportional to 640,669.95, 884,142.99 and 354,208.49 is: 488,817.92
Step by Step Solution
- Step 1: Write the proportion equation
640,669.95 : 884,142.99 = 354,208.49 : x - Step 2: Convert to fraction form
640,669.95/884,142.99 = 354,208.49/x - Step 3: Cross multiply
640,669.95x = 884,142.99 × 354,208.49 - Step 4: Simplify right side
640,669.95x = 313,170,951,660.94 - Step 5: Solve for x
x = 313,170,951,660.94/640,669.95 - Step 6: Final answer
x = 488,817.92
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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.