Finding the Fourth Proportional to 485,515,211.40, 728,272,817.10 and 445,338,271.80
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Solution
The fourth proportional to 485,515,211.40, 728,272,817.10 and 445,338,271.80 is: 668,007,407.70
Step by Step Solution
- Step 1: Write the proportion equation
485,515,211.40 : 728,272,817.10 = 445,338,271.80 : x - Step 2: Convert to fraction form
485,515,211.40/728,272,817.10 = 445,338,271.80/x - Step 3: Cross multiply
485,515,211.40x = 728,272,817.10 × 445,338,271.80 - Step 4: Simplify right side
485,515,211.40x = 324,327,757,766,231,488 - Step 5: Solve for x
x = 324,327,757,766,231,488/485,515,211.40 - Step 6: Final answer
x = 668,007,407.70
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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.