Finding the Fourth Proportional to 1,221,621.36, 1,832,548.64 and 379,947.12
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Solution
The fourth proportional to 1,221,621.36, 1,832,548.64 and 379,947.12 is: 569,956.94
Step by Step Solution
- Step 1: Write the proportion equation
1,221,621.36 : 1,832,548.64 = 379,947.12 : x - Step 2: Convert to fraction form
1,221,621.36/1,832,548.64 = 379,947.12/x - Step 3: Cross multiply
1,221,621.36x = 1,832,548.64 × 379,947.12 - Step 4: Simplify right side
1,221,621.36x = 696,271,578,027.92 - Step 5: Solve for x
x = 696,271,578,027.92/1,221,621.36 - Step 6: Final answer
x = 569,956.94
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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.