Finding the Fourth Proportional to 3,438,207.80, 5,157,311.70 and 879,417.80
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Solution
The fourth proportional to 3,438,207.80, 5,157,311.70 and 879,417.80 is: 1,319,126.70
Step by Step Solution
- Step 1: Write the proportion equation
3,438,207.80 : 5,157,311.70 = 879,417.80 : x - Step 2: Convert to fraction form
3,438,207.80/5,157,311.70 = 879,417.80/x - Step 3: Cross multiply
3,438,207.80x = 5,157,311.70 × 879,417.80 - Step 4: Simplify right side
3,438,207.80x = 4,535,431,709,128.26 - Step 5: Solve for x
x = 4,535,431,709,128.26/3,438,207.80 - Step 6: Final answer
x = 1,319,126.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.