Finding the Fourth Proportional to 725,833.79, 1,001,666.89 and 399,126.09
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Solution
The fourth proportional to 725,833.79, 1,001,666.89 and 399,126.09 is: 550,802.95
Step by Step Solution
- Step 1: Write the proportion equation
725,833.79 : 1,001,666.89 = 399,126.09 : x - Step 2: Convert to fraction form
725,833.79/1,001,666.89 = 399,126.09/x - Step 3: Cross multiply
725,833.79x = 1,001,666.89 × 399,126.09 - Step 4: Simplify right side
725,833.79x = 399,791,393,543.32 - Step 5: Solve for x
x = 399,791,393,543.32/725,833.79 - Step 6: Final answer
x = 550,802.95
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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.