Finding the Fourth Proportional to 664,851,029.20, 997,276,543.80 and 320,477,261.20
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Solution
The fourth proportional to 664,851,029.20, 997,276,543.80 and 320,477,261.20 is: 480,715,891.80
Step by Step Solution
- Step 1: Write the proportion equation
664,851,029.20 : 997,276,543.80 = 320,477,261.20 : x - Step 2: Convert to fraction form
664,851,029.20/997,276,543.80 = 320,477,261.20/x - Step 3: Cross multiply
664,851,029.20x = 997,276,543.80 × 320,477,261.20 - Step 4: Simplify right side
664,851,029.20x = 319,604,455,416,025,792 - Step 5: Solve for x
x = 319,604,455,416,025,792/664,851,029.20 - Step 6: Final answer
x = 480,715,891.80
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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.