Finding the Fourth Proportional to 4,752,741.80, 7,128,237.90 and 2,952,403.40
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Solution
The fourth proportional to 4,752,741.80, 7,128,237.90 and 2,952,403.40 is: 4,428,061.67
Step by Step Solution
- Step 1: Write the proportion equation
4,752,741.80 : 7,128,237.90 = 2,952,403.40 : x - Step 2: Convert to fraction form
4,752,741.80/7,128,237.90 = 2,952,403.40/x - Step 3: Cross multiply
4,752,741.80x = 7,128,237.90 × 2,952,403.40 - Step 4: Simplify right side
4,752,741.80x = 21,045,433,811,968.86 - Step 5: Solve for x
x = 21,045,433,811,968.86/4,752,741.80 - Step 6: Final answer
x = 4,428,061.67
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.