Finding the Fourth Proportional to 1,378,251.59, 1,901,988.74 and 766,391.25
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Solution
The fourth proportional to 1,378,251.59, 1,901,988.74 and 766,391.25 is: 1,057,620.79
Step by Step Solution
- Step 1: Write the proportion equation
1,378,251.59 : 1,901,988.74 = 766,391.25 : x - Step 2: Convert to fraction form
1,378,251.59/1,901,988.74 = 766,391.25/x - Step 3: Cross multiply
1,378,251.59x = 1,901,988.74 × 766,391.25 - Step 4: Simplify right side
1,378,251.59x = 1,457,667,536,982.96 - Step 5: Solve for x
x = 1,457,667,536,982.96/1,378,251.59 - Step 6: Final answer
x = 1,057,620.79
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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.