Finding the Fourth Proportional to 1,299,409.77, 1,949,392.83 and 388,663.68
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Solution
The fourth proportional to 1,299,409.77, 1,949,392.83 and 388,663.68 is: 583,078.72
Step by Step Solution
- Step 1: Write the proportion equation
1,299,409.77 : 1,949,392.83 = 388,663.68 : x - Step 2: Convert to fraction form
1,299,409.77/1,949,392.83 = 388,663.68/x - Step 3: Cross multiply
1,299,409.77x = 1,949,392.83 × 388,663.68 - Step 4: Simplify right side
1,299,409.77x = 757,658,191,073.41 - Step 5: Solve for x
x = 757,658,191,073.41/1,299,409.77 - Step 6: Final answer
x = 583,078.72
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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.