Finding the Fourth Proportional to 617,278.12, 851,654.84 and 402,339.76
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Solution
The fourth proportional to 617,278.12, 851,654.84 and 402,339.76 is: 555,105.70
Step by Step Solution
- Step 1: Write the proportion equation
617,278.12 : 851,654.84 = 402,339.76 : x - Step 2: Convert to fraction form
617,278.12/851,654.84 = 402,339.76/x - Step 3: Cross multiply
617,278.12x = 851,654.84 × 402,339.76 - Step 4: Simplify right side
617,278.12x = 342,654,603,928.44 - Step 5: Solve for x
x = 342,654,603,928.44/617,278.12 - Step 6: Final answer
x = 555,105.70
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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.