Finding the Fourth Proportional to 620,472,061.44, 856,251,235.92 and 342,018,235.08
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Solution
The fourth proportional to 620,472,061.44, 856,251,235.92 and 342,018,235.08 is: 471,985,049.28
Step by Step Solution
- Step 1: Write the proportion equation
620,472,061.44 : 856,251,235.92 = 342,018,235.08 : x - Step 2: Convert to fraction form
620,472,061.44/856,251,235.92 = 342,018,235.08/x - Step 3: Cross multiply
620,472,061.44x = 856,251,235.92 × 342,018,235.08 - Step 4: Simplify right side
620,472,061.44x = 292,853,536,494,427,072 - Step 5: Solve for x
x = 292,853,536,494,427,072/620,472,061.44 - Step 6: Final answer
x = 471,985,049.28
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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.