Finding the Fourth Proportional to 741,642.65, 1,023,486.93 and 419,400.75
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Solution
The fourth proportional to 741,642.65, 1,023,486.93 and 419,400.75 is: 578,784.39
Step by Step Solution
- Step 1: Write the proportion equation
741,642.65 : 1,023,486.93 = 419,400.75 : x - Step 2: Convert to fraction form
741,642.65/1,023,486.93 = 419,400.75/x - Step 3: Cross multiply
741,642.65x = 1,023,486.93 × 419,400.75 - Step 4: Simplify right side
741,642.65x = 429,251,186,057.20 - Step 5: Solve for x
x = 429,251,186,057.20/741,642.65 - Step 6: Final answer
x = 578,784.39
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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.