Finding the Fourth Proportional to 1,121,986.43, 1,548,474.19 and 631,972.07
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Solution
The fourth proportional to 1,121,986.43, 1,548,474.19 and 631,972.07 is: 872,196.32
Step by Step Solution
- Step 1: Write the proportion equation
1,121,986.43 : 1,548,474.19 = 631,972.07 : x - Step 2: Convert to fraction form
1,121,986.43/1,548,474.19 = 631,972.07/x - Step 3: Cross multiply
1,121,986.43x = 1,548,474.19 × 631,972.07 - Step 4: Simplify right side
1,121,986.43x = 978,592,429,873.57 - Step 5: Solve for x
x = 978,592,429,873.57/1,121,986.43 - Step 6: Final answer
x = 872,196.32
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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.