Finding the Fourth Proportional to 1,318,921.60, 1,979,548.80 and 1,129,964.80
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Solution
The fourth proportional to 1,318,921.60, 1,979,548.80 and 1,129,964.80 is: 1,695,946.49
Step by Step Solution
- Step 1: Write the proportion equation
1,318,921.60 : 1,979,548.80 = 1,129,964.80 : x - Step 2: Convert to fraction form
1,318,921.60/1,979,548.80 = 1,129,964.80/x - Step 3: Cross multiply
1,318,921.60x = 1,979,548.80 × 1,129,964.80 - Step 4: Simplify right side
1,318,921.60x = 2,236,820,463,882.24 - Step 5: Solve for x
x = 2,236,820,463,882.24/1,318,921.60 - Step 6: Final answer
x = 1,695,946.49
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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.