Finding the Fourth Proportional to 3,918,043.40, 5,406,603.44 and 2,198,831.76
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Solution
The fourth proportional to 3,918,043.40, 5,406,603.44 and 2,198,831.76 is: 3,034,221.46
Step by Step Solution
- Step 1: Write the proportion equation
3,918,043.40 : 5,406,603.44 = 2,198,831.76 : x - Step 2: Convert to fraction form
3,918,043.40/5,406,603.44 = 2,198,831.76/x - Step 3: Cross multiply
3,918,043.40x = 5,406,603.44 × 2,198,831.76 - Step 4: Simplify right side
3,918,043.40x = 11,888,211,346,603.09 - Step 5: Solve for x
x = 11,888,211,346,603.09/3,918,043.40 - Step 6: Final answer
x = 3,034,221.46
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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.