Finding the Fourth Proportional to 1,419,135.84, 2,128,984.63 and 520,585.43
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Solution
The fourth proportional to 1,419,135.84, 2,128,984.63 and 520,585.43 is: 780,981.17
Step by Step Solution
- Step 1: Write the proportion equation
1,419,135.84 : 2,128,984.63 = 520,585.43 : x - Step 2: Convert to fraction form
1,419,135.84/2,128,984.63 = 520,585.43/x - Step 3: Cross multiply
1,419,135.84x = 2,128,984.63 × 520,585.43 - Step 4: Simplify right side
1,419,135.84x = 1,108,318,368,427.02 - Step 5: Solve for x
x = 1,108,318,368,427.02/1,419,135.84 - Step 6: Final answer
x = 780,981.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.