Finding the Fourth Proportional to 712,638,205.20, 1,068,957,307.80 and 363,959,765.10
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Solution
The fourth proportional to 712,638,205.20, 1,068,957,307.80 and 363,959,765.10 is: 545,939,647.65
Step by Step Solution
- Step 1: Write the proportion equation
712,638,205.20 : 1,068,957,307.80 = 363,959,765.10 : x - Step 2: Convert to fraction form
712,638,205.20/1,068,957,307.80 = 363,959,765.10/x - Step 3: Cross multiply
712,638,205.20x = 1,068,957,307.80 × 363,959,765.10 - Step 4: Simplify right side
712,638,205.20x = 389,057,450,648,816,384 - Step 5: Solve for x
x = 389,057,450,648,816,384/712,638,205.20 - Step 6: Final answer
x = 545,939,647.65
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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.