Finding the Fourth Proportional to 5,430,138.49, 8,145,200.67 and 1,386,624.34
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Solution
The fourth proportional to 5,430,138.49, 8,145,200.67 and 1,386,624.34 is: 2,079,934.71
Step by Step Solution
- Step 1: Write the proportion equation
5,430,138.49 : 8,145,200.67 = 1,386,624.34 : x - Step 2: Convert to fraction form
5,430,138.49/8,145,200.67 = 1,386,624.34/x - Step 3: Cross multiply
5,430,138.49x = 8,145,200.67 × 1,386,624.34 - Step 4: Simplify right side
5,430,138.49x = 11,294,333,503,206.31 - Step 5: Solve for x
x = 11,294,333,503,206.31/5,430,138.49 - Step 6: Final answer
x = 2,079,934.71
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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.