Finding the Fourth Proportional to 2,190,938.12, 3,023,438.79 and 1,224,075.68
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Solution
The fourth proportional to 2,190,938.12, 3,023,438.79 and 1,224,075.68 is: 1,689,193.25
Step by Step Solution
- Step 1: Write the proportion equation
2,190,938.12 : 3,023,438.79 = 1,224,075.68 : x - Step 2: Convert to fraction form
2,190,938.12/3,023,438.79 = 1,224,075.68/x - Step 3: Cross multiply
2,190,938.12x = 3,023,438.79 × 1,224,075.68 - Step 4: Simplify right side
2,190,938.12x = 3,700,917,877,690.43 - Step 5: Solve for x
x = 3,700,917,877,690.43/2,190,938.12 - Step 6: Final answer
x = 1,689,193.25
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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.