Finding the Fourth Proportional to 684,391.81, 944,422.99 and 378,450.49
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Solution
The fourth proportional to 684,391.81, 944,422.99 and 378,450.49 is: 522,240.82
Step by Step Solution
- Step 1: Write the proportion equation
684,391.81 : 944,422.99 = 378,450.49 : x - Step 2: Convert to fraction form
684,391.81/944,422.99 = 378,450.49/x - Step 3: Cross multiply
684,391.81x = 944,422.99 × 378,450.49 - Step 4: Simplify right side
684,391.81x = 357,417,343,332.77 - Step 5: Solve for x
x = 357,417,343,332.77/684,391.81 - Step 6: Final answer
x = 522,240.82
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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.