Finding the Fourth Proportional to 756,909.20, 1,133,808.60 and 520,518.80
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Solution
The fourth proportional to 756,909.20, 1,133,808.60 and 520,518.80 is: 779,708.70
Step by Step Solution
- Step 1: Write the proportion equation
756,909.20 : 1,133,808.60 = 520,518.80 : x - Step 2: Convert to fraction form
756,909.20/1,133,808.60 = 520,518.80/x - Step 3: Cross multiply
756,909.20x = 1,133,808.60 × 520,518.80 - Step 4: Simplify right side
756,909.20x = 590,168,691,901.68 - Step 5: Solve for x
x = 590,168,691,901.68/756,909.20 - Step 6: Final answer
x = 779,708.70
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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.