Finding the Fourth Proportional to 861,105.12, 1,291,658.76 and 411,720.36
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Solution
The fourth proportional to 861,105.12, 1,291,658.76 and 411,720.36 is: 617,581.06
Step by Step Solution
- Step 1: Write the proportion equation
861,105.12 : 1,291,658.76 = 411,720.36 : x - Step 2: Convert to fraction form
861,105.12/1,291,658.76 = 411,720.36/x - Step 3: Cross multiply
861,105.12x = 1,291,658.76 × 411,720.36 - Step 4: Simplify right side
861,105.12x = 531,802,209,664.35 - Step 5: Solve for x
x = 531,802,209,664.35/861,105.12 - Step 6: Final answer
x = 617,581.06
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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.