Finding the Fourth Proportional to 5,752,846.42, 7,938,878.09 and 3,139,402.21
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Solution
The fourth proportional to 5,752,846.42, 7,938,878.09 and 3,139,402.21 is: 4,332,347.78
Step by Step Solution
- Step 1: Write the proportion equation
5,752,846.42 : 7,938,878.09 = 3,139,402.21 : x - Step 2: Convert to fraction form
5,752,846.42/7,938,878.09 = 3,139,402.21/x - Step 3: Cross multiply
5,752,846.42x = 7,938,878.09 × 3,139,402.21 - Step 4: Simplify right side
5,752,846.42x = 24,923,331,420,666.58 - Step 5: Solve for x
x = 24,923,331,420,666.58/5,752,846.42 - Step 6: Final answer
x = 4,332,347.78
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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.