Finding the Fourth Proportional to 987,888, 1,363,343.76 and 558,157.08
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Solution
The fourth proportional to 987,888, 1,363,343.76 and 558,157.08 is: 770,289.72
Step by Step Solution
- Step 1: Write the proportion equation
987,888 : 1,363,343.76 = 558,157.08 : x - Step 2: Convert to fraction form
987,888/1,363,343.76 = 558,157.08/x - Step 3: Cross multiply
987,888x = 1,363,343.76 × 558,157.08 - Step 4: Simplify right side
987,888x = 760,959,972,117.82 - Step 5: Solve for x
x = 760,959,972,117.82/987,888 - Step 6: Final answer
x = 770,289.72
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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.