Finding the Fourth Proportional to 1,028,909.36, 1,419,816.12 and 576,138.80
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Solution
The fourth proportional to 1,028,909.36, 1,419,816.12 and 576,138.80 is: 795,027.42
Step by Step Solution
- Step 1: Write the proportion equation
1,028,909.36 : 1,419,816.12 = 576,138.80 : x - Step 2: Convert to fraction form
1,028,909.36/1,419,816.12 = 576,138.80/x - Step 3: Cross multiply
1,028,909.36x = 1,419,816.12 × 576,138.80 - Step 4: Simplify right side
1,028,909.36x = 818,011,155,597.46 - Step 5: Solve for x
x = 818,011,155,597.46/1,028,909.36 - Step 6: Final answer
x = 795,027.42
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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.