Finding the Fourth Proportional to 5,172,463.99, 7,138,221.74 and 2,880,624.68
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Solution
The fourth proportional to 5,172,463.99, 7,138,221.74 and 2,880,624.68 is: 3,975,385.37
Step by Step Solution
- Step 1: Write the proportion equation
5,172,463.99 : 7,138,221.74 = 2,880,624.68 : x - Step 2: Convert to fraction form
5,172,463.99/7,138,221.74 = 2,880,624.68/x - Step 3: Cross multiply
5,172,463.99x = 7,138,221.74 × 2,880,624.68 - Step 4: Simplify right side
5,172,463.99x = 20,562,537,665,462.31 - Step 5: Solve for x
x = 20,562,537,665,462.31/5,172,463.99 - Step 6: Final answer
x = 3,975,385.37
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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.