Finding the Fourth Proportional to 645,400.84, 890,637.60 and 351,042.99
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Solution
The fourth proportional to 645,400.84, 890,637.60 and 351,042.99 is: 484,430.87
Step by Step Solution
- Step 1: Write the proportion equation
645,400.84 : 890,637.60 = 351,042.99 : x - Step 2: Convert to fraction form
645,400.84/890,637.60 = 351,042.99/x - Step 3: Cross multiply
645,400.84x = 890,637.60 × 351,042.99 - Step 4: Simplify right side
645,400.84x = 312,652,086,110.42 - Step 5: Solve for x
x = 312,652,086,110.42/645,400.84 - Step 6: Final answer
x = 484,430.87
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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.