Finding the Fourth Proportional to 612,607.12, 918,310.74 and 342,866.96
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Solution
The fourth proportional to 612,607.12, 918,310.74 and 342,866.96 is: 513,964.66
Step by Step Solution
- Step 1: Write the proportion equation
612,607.12 : 918,310.74 = 342,866.96 : x - Step 2: Convert to fraction form
612,607.12/918,310.74 = 342,866.96/x - Step 3: Cross multiply
612,607.12x = 918,310.74 × 342,866.96 - Step 4: Simplify right side
612,607.12x = 314,858,411,759.15 - Step 5: Solve for x
x = 314,858,411,759.15/612,607.12 - Step 6: Final answer
x = 513,964.66
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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.