Finding the Fourth Proportional to 725,515.20, 1,088,272.80 and 282,283.20
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Solution
The fourth proportional to 725,515.20, 1,088,272.80 and 282,283.20 is: 423,424.80
Step by Step Solution
- Step 1: Write the proportion equation
725,515.20 : 1,088,272.80 = 282,283.20 : x - Step 2: Convert to fraction form
725,515.20/1,088,272.80 = 282,283.20/x - Step 3: Cross multiply
725,515.20x = 1,088,272.80 × 282,283.20 - Step 4: Simplify right side
725,515.20x = 307,201,128,456.96 - Step 5: Solve for x
x = 307,201,128,456.96/725,515.20 - Step 6: Final answer
x = 423,424.80
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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.