Finding the Fourth Proportional to 715,545.42, 987,464.21 and 409,620.57
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Solution
The fourth proportional to 715,545.42, 987,464.21 and 409,620.57 is: 565,282.99
Step by Step Solution
- Step 1: Write the proportion equation
715,545.42 : 987,464.21 = 409,620.57 : x - Step 2: Convert to fraction form
715,545.42/987,464.21 = 409,620.57/x - Step 3: Cross multiply
715,545.42x = 987,464.21 × 409,620.57 - Step 4: Simplify right side
715,545.42x = 404,485,652,554.80 - Step 5: Solve for x
x = 404,485,652,554.80/715,545.42 - Step 6: Final answer
x = 565,282.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.