Finding the Fourth Proportional to 4,991,133.76, 6,887,831.49 and 2,815,670.18
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Solution
The fourth proportional to 4,991,133.76, 6,887,831.49 and 2,815,670.18 is: 3,885,662.59
Step by Step Solution
- Step 1: Write the proportion equation
4,991,133.76 : 6,887,831.49 = 2,815,670.18 : x - Step 2: Convert to fraction form
4,991,133.76/6,887,831.49 = 2,815,670.18/x - Step 3: Cross multiply
4,991,133.76x = 6,887,831.49 × 2,815,670.18 - Step 4: Simplify right side
4,991,133.76x = 19,393,861,731,257.97 - Step 5: Solve for x
x = 19,393,861,731,257.97/4,991,133.76 - Step 6: Final answer
x = 3,885,662.59
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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.