Finding the Fourth Proportional to 831,913.18, 1,247,869.78 and 270,947.68
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Solution
The fourth proportional to 831,913.18, 1,247,869.78 and 270,947.68 is: 406,421.52
Step by Step Solution
- Step 1: Write the proportion equation
831,913.18 : 1,247,869.78 = 270,947.68 : x - Step 2: Convert to fraction form
831,913.18/1,247,869.78 = 270,947.68/x - Step 3: Cross multiply
831,913.18x = 1,247,869.78 × 270,947.68 - Step 4: Simplify right side
831,913.18x = 338,107,418,036.07 - Step 5: Solve for x
x = 338,107,418,036.07/831,913.18 - Step 6: Final answer
x = 406,421.52
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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.