Finding the Fourth Proportional to 1,987,965.18, 2,743,319.95 and 1,214,889.37
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Solution
The fourth proportional to 1,987,965.18, 2,743,319.95 and 1,214,889.37 is: 1,676,503.33
Step by Step Solution
- Step 1: Write the proportion equation
1,987,965.18 : 2,743,319.95 = 1,214,889.37 : x - Step 2: Convert to fraction form
1,987,965.18/2,743,319.95 = 1,214,889.37/x - Step 3: Cross multiply
1,987,965.18x = 2,743,319.95 × 1,214,889.37 - Step 4: Simplify right side
1,987,965.18x = 3,332,830,235,868.41 - Step 5: Solve for x
x = 3,332,830,235,868.41/1,987,965.18 - Step 6: Final answer
x = 1,676,503.33
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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.