Finding the Fourth Proportional to 3,897,701.99, 5,378,863.49 and 2,155,488.59
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Solution
The fourth proportional to 3,897,701.99, 5,378,863.49 and 2,155,488.59 is: 2,974,593.47
Step by Step Solution
- Step 1: Write the proportion equation
3,897,701.99 : 5,378,863.49 = 2,155,488.59 : x - Step 2: Convert to fraction form
3,897,701.99/5,378,863.49 = 2,155,488.59/x - Step 3: Cross multiply
3,897,701.99x = 5,378,863.49 × 2,155,488.59 - Step 4: Simplify right side
3,897,701.99x = 11,594,078,879,862.58 - Step 5: Solve for x
x = 11,594,078,879,862.58/3,897,701.99 - Step 6: Final answer
x = 2,974,593.47
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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.