Finding the Fourth Proportional to 393,985,122.40, 590,977,683.60 and 372,821,960.80
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Solution
The fourth proportional to 393,985,122.40, 590,977,683.60 and 372,821,960.80 is: 559,232,941.20
Step by Step Solution
- Step 1: Write the proportion equation
393,985,122.40 : 590,977,683.60 = 372,821,960.80 : x - Step 2: Convert to fraction form
393,985,122.40/590,977,683.60 = 372,821,960.80/x - Step 3: Cross multiply
393,985,122.40x = 590,977,683.60 × 372,821,960.80 - Step 4: Simplify right side
393,985,122.40x = 220,329,458,788,794,016 - Step 5: Solve for x
x = 220,329,458,788,794,016/393,985,122.40 - Step 6: Final answer
x = 559,232,941.20
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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.