Finding the Fourth Proportional to 915,724.44, 1,263,699.74 and 513,316.44
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Solution
The fourth proportional to 915,724.44, 1,263,699.74 and 513,316.44 is: 708,376.69
Step by Step Solution
- Step 1: Write the proportion equation
915,724.44 : 1,263,699.74 = 513,316.44 : x - Step 2: Convert to fraction form
915,724.44/1,263,699.74 = 513,316.44/x - Step 3: Cross multiply
915,724.44x = 1,263,699.74 × 513,316.44 - Step 4: Simplify right side
915,724.44x = 648,677,851,765.73 - Step 5: Solve for x
x = 648,677,851,765.73/915,724.44 - Step 6: Final answer
x = 708,376.69
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.