Finding the Fourth Proportional to 644,178.75, 966,261.93 and 391,528.95
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Solution
The fourth proportional to 644,178.75, 966,261.93 and 391,528.95 is: 587,289.66
Step by Step Solution
- Step 1: Write the proportion equation
644,178.75 : 966,261.93 = 391,528.95 : x - Step 2: Convert to fraction form
644,178.75/966,261.93 = 391,528.95/x - Step 3: Cross multiply
644,178.75x = 966,261.93 × 391,528.95 - Step 4: Simplify right side
644,178.75x = 378,319,518,877.87 - Step 5: Solve for x
x = 378,319,518,877.87/644,178.75 - Step 6: Final answer
x = 587,289.66
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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.