Finding the Fourth Proportional to 828,605.70, 1,242,908.55 and 408,701.70
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Solution
The fourth proportional to 828,605.70, 1,242,908.55 and 408,701.70 is: 613,052.55
Step by Step Solution
- Step 1: Write the proportion equation
828,605.70 : 1,242,908.55 = 408,701.70 : x - Step 2: Convert to fraction form
828,605.70/1,242,908.55 = 408,701.70/x - Step 3: Cross multiply
828,605.70x = 1,242,908.55 × 408,701.70 - Step 4: Simplify right side
828,605.70x = 507,978,837,329.54 - Step 5: Solve for x
x = 507,978,837,329.54/828,605.70 - Step 6: Final answer
x = 613,052.55
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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.