Finding the Fourth Proportional to 7,182,831.49, 9,912,518.13 and 3,919,856.92
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Solution
The fourth proportional to 7,182,831.49, 9,912,518.13 and 3,919,856.92 is: 5,409,517.52
Step by Step Solution
- Step 1: Write the proportion equation
7,182,831.49 : 9,912,518.13 = 3,919,856.92 : x - Step 2: Convert to fraction form
7,182,831.49/9,912,518.13 = 3,919,856.92/x - Step 3: Cross multiply
7,182,831.49x = 9,912,518.13 × 3,919,856.92 - Step 4: Simplify right side
7,182,831.49x = 38,855,652,786,505.96 - Step 5: Solve for x
x = 38,855,652,786,505.96/7,182,831.49 - Step 6: Final answer
x = 5,409,517.52
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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.