Finding the Fourth Proportional to 418,709.13, 577,632.09 and 279,039.12
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Solution
The fourth proportional to 418,709.13, 577,632.09 and 279,039.12 is: 384,949.69
Step by Step Solution
- Step 1: Write the proportion equation
418,709.13 : 577,632.09 = 279,039.12 : x - Step 2: Convert to fraction form
418,709.13/577,632.09 = 279,039.12/x - Step 3: Cross multiply
418,709.13x = 577,632.09 × 279,039.12 - Step 4: Simplify right side
418,709.13x = 161,181,950,077.36 - Step 5: Solve for x
x = 161,181,950,077.36/418,709.13 - Step 6: Final answer
x = 384,949.69
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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.