Finding the Fourth Proportional to 879,643.51, 1,213,902.97 and 477,226.87
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Solution
The fourth proportional to 879,643.51, 1,213,902.97 and 477,226.87 is: 658,570.33
Step by Step Solution
- Step 1: Write the proportion equation
879,643.51 : 1,213,902.97 = 477,226.87 : x - Step 2: Convert to fraction form
879,643.51/1,213,902.97 = 477,226.87/x - Step 3: Cross multiply
879,643.51x = 1,213,902.97 × 477,226.87 - Step 4: Simplify right side
879,643.51x = 579,307,114,856.80 - Step 5: Solve for x
x = 579,307,114,856.80/879,643.51 - Step 6: Final answer
x = 658,570.33
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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.