Finding the Fourth Proportional to 3,900,138.19, 5,845,415.83 and 2,190,688.13
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Solution
The fourth proportional to 3,900,138.19, 5,845,415.83 and 2,190,688.13 is: 3,283,340.86
Step by Step Solution
- Step 1: Write the proportion equation
3,900,138.19 : 5,845,415.83 = 2,190,688.13 : x - Step 2: Convert to fraction form
3,900,138.19/5,845,415.83 = 2,190,688.13/x - Step 3: Cross multiply
3,900,138.19x = 5,845,415.83 × 2,190,688.13 - Step 4: Simplify right side
3,900,138.19x = 12,805,483,082,831.92 - Step 5: Solve for x
x = 12,805,483,082,831.92/3,900,138.19 - Step 6: Final answer
x = 3,283,340.86
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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.