Finding the Fourth Proportional to 392,408,657.70, 588,593,420.80 and 146,747,232.20
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Solution
The fourth proportional to 392,408,657.70, 588,593,420.80 and 146,747,232.20 is: 220,113,531.39
Step by Step Solution
- Step 1: Write the proportion equation
392,408,657.70 : 588,593,420.80 = 146,747,232.20 : x - Step 2: Convert to fraction form
392,408,657.70/588,593,420.80 = 146,747,232.20/x - Step 3: Cross multiply
392,408,657.70x = 588,593,420.80 × 146,747,232.20 - Step 4: Simplify right side
392,408,657.70x = 86,374,455,393,529,888 - Step 5: Solve for x
x = 86,374,455,393,529,888/392,408,657.70 - Step 6: Final answer
x = 220,113,531.39
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1.5x scale
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.