Finding the Fourth Proportional to 677,121.12, 934,391.16 and 390,624.12
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Solution
The fourth proportional to 677,121.12, 934,391.16 and 390,624.12 is: 539,040.53
Step by Step Solution
- Step 1: Write the proportion equation
677,121.12 : 934,391.16 = 390,624.12 : x - Step 2: Convert to fraction form
677,121.12/934,391.16 = 390,624.12/x - Step 3: Cross multiply
677,121.12x = 934,391.16 × 390,624.12 - Step 4: Simplify right side
677,121.12x = 364,995,724,610.78 - Step 5: Solve for x
x = 364,995,724,610.78/677,121.12 - Step 6: Final answer
x = 539,040.53
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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.