Finding the Fourth Proportional to 878,628.80, 1,317,943.20 and 524,043.20
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Solution
The fourth proportional to 878,628.80, 1,317,943.20 and 524,043.20 is: 786,064.80
Step by Step Solution
- Step 1: Write the proportion equation
878,628.80 : 1,317,943.20 = 524,043.20 : x - Step 2: Convert to fraction form
878,628.80/1,317,943.20 = 524,043.20/x - Step 3: Cross multiply
878,628.80x = 1,317,943.20 × 524,043.20 - Step 4: Simplify right side
878,628.80x = 690,659,171,946.24 - Step 5: Solve for x
x = 690,659,171,946.24/878,628.80 - Step 6: Final answer
x = 786,064.80
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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.