Finding the Fourth Proportional to 639,577,802.20, 959,366,703.30 and 593,661,299.80
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Solution
The fourth proportional to 639,577,802.20, 959,366,703.30 and 593,661,299.80 is: 890,491,949.70
Step by Step Solution
- Step 1: Write the proportion equation
639,577,802.20 : 959,366,703.30 = 593,661,299.80 : x - Step 2: Convert to fraction form
639,577,802.20/959,366,703.30 = 593,661,299.80/x - Step 3: Cross multiply
639,577,802.20x = 959,366,703.30 × 593,661,299.80 - Step 4: Simplify right side
639,577,802.20x = 569,538,884,065,918,848 - Step 5: Solve for x
x = 569,538,884,065,918,848/639,577,802.20 - Step 6: Final answer
x = 890,491,949.70
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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.