Finding the Fourth Proportional to 728,712,163.40, 1,093,068,245.10 and 658,420,233.80
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Solution
The fourth proportional to 728,712,163.40, 1,093,068,245.10 and 658,420,233.80 is: 987,630,350.70
Step by Step Solution
- Step 1: Write the proportion equation
728,712,163.40 : 1,093,068,245.10 = 658,420,233.80 : x - Step 2: Convert to fraction form
728,712,163.40/1,093,068,245.10 = 658,420,233.80/x - Step 3: Cross multiply
728,712,163.40x = 1,093,068,245.10 × 658,420,233.80 - Step 4: Simplify right side
728,712,163.40x = 719,698,249,498,097,536 - Step 5: Solve for x
x = 719,698,249,498,097,536/728,712,163.40 - Step 6: Final answer
x = 987,630,350.70
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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.