Finding the Fourth Proportional to 861,579.36, 1,188,893.64 and 499,119.96
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Solution
The fourth proportional to 861,579.36, 1,188,893.64 and 499,119.96 is: 688,735.80
Step by Step Solution
- Step 1: Write the proportion equation
861,579.36 : 1,188,893.64 = 499,119.96 : x - Step 2: Convert to fraction form
861,579.36/1,188,893.64 = 499,119.96/x - Step 3: Cross multiply
861,579.36x = 1,188,893.64 × 499,119.96 - Step 4: Simplify right side
861,579.36x = 593,400,546,041.05 - Step 5: Solve for x
x = 593,400,546,041.05/861,579.36 - Step 6: Final answer
x = 688,735.80
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.