Finding the Fourth Proportional to 639,578,071.20, 959,367,106.80 and 593,661,568.80
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Solution
The fourth proportional to 639,578,071.20, 959,367,106.80 and 593,661,568.80 is: 890,492,353.20
Step by Step Solution
- Step 1: Write the proportion equation
639,578,071.20 : 959,367,106.80 = 593,661,568.80 : x - Step 2: Convert to fraction form
639,578,071.20/959,367,106.80 = 593,661,568.80/x - Step 3: Cross multiply
639,578,071.20x = 959,367,106.80 × 593,661,568.80 - Step 4: Simplify right side
639,578,071.20x = 569,539,381,678,005,056 - Step 5: Solve for x
x = 569,539,381,678,005,056/639,578,071.20 - Step 6: Final answer
x = 890,492,353.20
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Double scale
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Similar ratio
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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.