Finding the Fourth Proportional to 861,070.12, 1,291,606.26 and 411,685.36
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Solution
The fourth proportional to 861,070.12, 1,291,606.26 and 411,685.36 is: 617,528.56
Step by Step Solution
- Step 1: Write the proportion equation
861,070.12 : 1,291,606.26 = 411,685.36 : x - Step 2: Convert to fraction form
861,070.12/1,291,606.26 = 411,685.36/x - Step 3: Cross multiply
861,070.12x = 1,291,606.26 × 411,685.36 - Step 4: Simplify right side
861,070.12x = 531,735,388,126.35 - Step 5: Solve for x
x = 531,735,388,126.35/861,070.12 - Step 6: Final answer
x = 617,528.56
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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.