Finding the Fourth Proportional to 9,680,421.87, 13,358,474.99 and 5,328,658.19
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Solution
The fourth proportional to 9,680,421.87, 13,358,474.99 and 5,328,658.19 is: 7,353,269.11
Step by Step Solution
- Step 1: Write the proportion equation
9,680,421.87 : 13,358,474.99 = 5,328,658.19 : x - Step 2: Convert to fraction form
9,680,421.87/13,358,474.99 = 5,328,658.19/x - Step 3: Cross multiply
9,680,421.87x = 13,358,474.99 × 5,328,658.19 - Step 4: Simplify right side
9,680,421.87x = 71,182,747,067,938 - Step 5: Solve for x
x = 71,182,747,067,938/9,680,421.87 - Step 6: Final answer
x = 7,353,269.11
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.