Finding the Fourth Proportional to 1,277,343.19, 1,916,384.60 and 378,806.55
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Solution
The fourth proportional to 1,277,343.19, 1,916,384.60 and 378,806.55 is: 568,319.50
Step by Step Solution
- Step 1: Write the proportion equation
1,277,343.19 : 1,916,384.60 = 378,806.55 : x - Step 2: Convert to fraction form
1,277,343.19/1,916,384.60 = 378,806.55/x - Step 3: Cross multiply
1,277,343.19x = 1,916,384.60 × 378,806.55 - Step 4: Simplify right side
1,277,343.19x = 725,939,038,799.13 - Step 5: Solve for x
x = 725,939,038,799.13/1,277,343.19 - Step 6: Final answer
x = 568,319.50
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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.