Finding the Fourth Proportional to 711,781.47, 1,072,623.78 and 644,333.99
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Solution
The fourth proportional to 711,781.47, 1,072,623.78 and 644,333.99 is: 970,983.35
Step by Step Solution
- Step 1: Write the proportion equation
711,781.47 : 1,072,623.78 = 644,333.99 : x - Step 2: Convert to fraction form
711,781.47/1,072,623.78 = 644,333.99/x - Step 3: Cross multiply
711,781.47x = 1,072,623.78 × 644,333.99 - Step 4: Simplify right side
711,781.47x = 691,127,954,573.16 - Step 5: Solve for x
x = 691,127,954,573.16/711,781.47 - Step 6: Final answer
x = 970,983.35
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.