Finding the Fourth Proportional to 686,770.12, 1,030,438.62 and 370,855
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Solution
The fourth proportional to 686,770.12, 1,030,438.62 and 370,855 is: 556,435.56
Step by Step Solution
- Step 1: Write the proportion equation
686,770.12 : 1,030,438.62 = 370,855 : x - Step 2: Convert to fraction form
686,770.12/1,030,438.62 = 370,855/x - Step 3: Cross multiply
686,770.12x = 1,030,438.62 × 370,855 - Step 4: Simplify right side
686,770.12x = 382,143,314,420.10 - Step 5: Solve for x
x = 382,143,314,420.10/686,770.12 - Step 6: Final answer
x = 556,435.56
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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.