Finding the Fourth Proportional to 686,539.40, 1,029,809.10 and 213,369.80
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Solution
The fourth proportional to 686,539.40, 1,029,809.10 and 213,369.80 is: 320,054.70
Step by Step Solution
- Step 1: Write the proportion equation
686,539.40 : 1,029,809.10 = 213,369.80 : x - Step 2: Convert to fraction form
686,539.40/1,029,809.10 = 213,369.80/x - Step 3: Cross multiply
686,539.40x = 1,029,809.10 × 213,369.80 - Step 4: Simplify right side
686,539.40x = 219,730,161,705.18 - Step 5: Solve for x
x = 219,730,161,705.18/686,539.40 - Step 6: Final answer
x = 320,054.70
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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.