Finding the Fourth Proportional to 5,717,291.97, 7,889,878.38 and 3,139,139.73
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Solution
The fourth proportional to 5,717,291.97, 7,889,878.38 and 3,139,139.73 is: 4,332,021.32
Step by Step Solution
- Step 1: Write the proportion equation
5,717,291.97 : 7,889,878.38 = 3,139,139.73 : x - Step 2: Convert to fraction form
5,717,291.97/7,889,878.38 = 3,139,139.73/x - Step 3: Cross multiply
5,717,291.97x = 7,889,878.38 × 3,139,139.73 - Step 4: Simplify right side
5,717,291.97x = 24,767,430,687,526.04 - Step 5: Solve for x
x = 24,767,430,687,526.04/5,717,291.97 - Step 6: Final answer
x = 4,332,021.32
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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.