Finding the Fourth Proportional to 7,243,512.47, 9,986,058.87 and 5,778,393.75
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Solution
The fourth proportional to 7,243,512.47, 9,986,058.87 and 5,778,393.75 is: 7,966,215.35
Step by Step Solution
- Step 1: Write the proportion equation
7,243,512.47 : 9,986,058.87 = 5,778,393.75 : x - Step 2: Convert to fraction form
7,243,512.47/9,986,058.87 = 5,778,393.75/x - Step 3: Cross multiply
7,243,512.47x = 9,986,058.87 × 5,778,393.75 - Step 4: Simplify right side
7,243,512.47x = 57,703,380,161,540.05 - Step 5: Solve for x
x = 57,703,380,161,540.05/7,243,512.47 - Step 6: Final answer
x = 7,966,215.35
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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.