Finding the Fourth Proportional to 440,723,309.80, 661,084,964.70 and 236,649,965.80
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Solution
The fourth proportional to 440,723,309.80, 661,084,964.70 and 236,649,965.80 is: 354,974,948.70
Step by Step Solution
- Step 1: Write the proportion equation
440,723,309.80 : 661,084,964.70 = 236,649,965.80 : x - Step 2: Convert to fraction form
440,723,309.80/661,084,964.70 = 236,649,965.80/x - Step 3: Cross multiply
440,723,309.80x = 661,084,964.70 × 236,649,965.80 - Step 4: Simplify right side
440,723,309.80x = 156,445,734,287,149,216 - Step 5: Solve for x
x = 156,445,734,287,149,216/440,723,309.80 - Step 6: Final answer
x = 354,974,948.70
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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.