Finding the Fourth Proportional to 646,883,405.80, 970,325,108.70 and 629,877,293.80
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Solution
The fourth proportional to 646,883,405.80, 970,325,108.70 and 629,877,293.80 is: 944,815,940.70
Step by Step Solution
- Step 1: Write the proportion equation
646,883,405.80 : 970,325,108.70 = 629,877,293.80 : x - Step 2: Convert to fraction form
646,883,405.80/970,325,108.70 = 629,877,293.80/x - Step 3: Cross multiply
646,883,405.80x = 970,325,108.70 × 629,877,293.80 - Step 4: Simplify right side
646,883,405.80x = 611,185,753,574,146,816 - Step 5: Solve for x
x = 611,185,753,574,146,816/646,883,405.80 - Step 6: Final answer
x = 944,815,940.70
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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.