Finding the Fourth Proportional to 704,874.21, 972,494.80 and 398,920.20
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Solution
The fourth proportional to 704,874.21, 972,494.80 and 398,920.20 is: 550,378.80
Step by Step Solution
- Step 1: Write the proportion equation
704,874.21 : 972,494.80 = 398,920.20 : x - Step 2: Convert to fraction form
704,874.21/972,494.80 = 398,920.20/x - Step 3: Cross multiply
704,874.21x = 972,494.80 × 398,920.20 - Step 4: Simplify right side
704,874.21x = 387,947,820,114.96 - Step 5: Solve for x
x = 387,947,820,114.96/704,874.21 - Step 6: Final answer
x = 550,378.80
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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.