Finding the Fourth Proportional to 6,420,211.80, 9,631,743.30 and 2,160,259.80
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Solution
The fourth proportional to 6,420,211.80, 9,631,743.30 and 2,160,259.80 is: 3,240,869.38
Step by Step Solution
- Step 1: Write the proportion equation
6,420,211.80 : 9,631,743.30 = 2,160,259.80 : x - Step 2: Convert to fraction form
6,420,211.80/9,631,743.30 = 2,160,259.80/x - Step 3: Cross multiply
6,420,211.80x = 9,631,743.30 × 2,160,259.80 - Step 4: Simplify right side
6,420,211.80x = 20,807,067,854,909.34 - Step 5: Solve for x
x = 20,807,067,854,909.34/6,420,211.80 - Step 6: Final answer
x = 3,240,869.38
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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.