Finding the Fourth Proportional to 3,897,699.99, 5,378,860.73 and 2,155,486.59
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Solution
The fourth proportional to 3,897,699.99, 5,378,860.73 and 2,155,486.59 is: 2,974,590.71
Step by Step Solution
- Step 1: Write the proportion equation
3,897,699.99 : 5,378,860.73 = 2,155,486.59 : x - Step 2: Convert to fraction form
3,897,699.99/5,378,860.73 = 2,155,486.59/x - Step 3: Cross multiply
3,897,699.99x = 5,378,860.73 × 2,155,486.59 - Step 4: Simplify right side
3,897,699.99x = 11,594,062,172,992.61 - Step 5: Solve for x
x = 11,594,062,172,992.61/3,897,699.99 - Step 6: Final answer
x = 2,974,590.71
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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.