Finding the Fourth Proportional to 440,122,420.20, 660,183,630.30 and 210,539,908.20
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Solution
The fourth proportional to 440,122,420.20, 660,183,630.30 and 210,539,908.20 is: 315,809,862.30
Step by Step Solution
- Step 1: Write the proportion equation
440,122,420.20 : 660,183,630.30 = 210,539,908.20 : x - Step 2: Convert to fraction form
440,122,420.20/660,183,630.30 = 210,539,908.20/x - Step 3: Cross multiply
440,122,420.20x = 660,183,630.30 × 210,539,908.20 - Step 4: Simplify right side
440,122,420.20x = 138,995,000,918,504,720 - Step 5: Solve for x
x = 138,995,000,918,504,720/440,122,420.20 - Step 6: Final answer
x = 315,809,862.30
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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.