Finding the Fourth Proportional to 722,616.84, 1,083,981.34 and 217,138.36
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Solution
The fourth proportional to 722,616.84, 1,083,981.34 and 217,138.36 is: 325,724.39
Step by Step Solution
- Step 1: Write the proportion equation
722,616.84 : 1,083,981.34 = 217,138.36 : x - Step 2: Convert to fraction form
722,616.84/1,083,981.34 = 217,138.36/x - Step 3: Cross multiply
722,616.84x = 1,083,981.34 × 217,138.36 - Step 4: Simplify right side
722,616.84x = 235,373,930,438.20 - Step 5: Solve for x
x = 235,373,930,438.20/722,616.84 - Step 6: Final answer
x = 325,724.39
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.