Finding the Fourth Proportional to 1,188,313.74, 1,639,861.81 and 644,461.52
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Solution
The fourth proportional to 1,188,313.74, 1,639,861.81 and 644,461.52 is: 889,350.84
Step by Step Solution
- Step 1: Write the proportion equation
1,188,313.74 : 1,639,861.81 = 644,461.52 : x - Step 2: Convert to fraction form
1,188,313.74/1,639,861.81 = 644,461.52/x - Step 3: Cross multiply
1,188,313.74x = 1,639,861.81 × 644,461.52 - Step 4: Simplify right side
1,188,313.74x = 1,056,827,824,852.09 - Step 5: Solve for x
x = 1,056,827,824,852.09/1,188,313.74 - Step 6: Final answer
x = 889,350.84
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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.