Finding the Fourth Proportional to 1,378,602.36, 1,901,949.40 and 855,070.80
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Solution
The fourth proportional to 1,378,602.36, 1,901,949.40 and 855,070.80 is: 1,179,674.03
Step by Step Solution
- Step 1: Write the proportion equation
1,378,602.36 : 1,901,949.40 = 855,070.80 : x - Step 2: Convert to fraction form
1,378,602.36/1,901,949.40 = 855,070.80/x - Step 3: Cross multiply
1,378,602.36x = 1,901,949.40 × 855,070.80 - Step 4: Simplify right side
1,378,602.36x = 1,626,301,398,408.90 - Step 5: Solve for x
x = 1,626,301,398,408.90/1,378,602.36 - Step 6: Final answer
x = 1,179,674.03
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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.