Finding the Fourth Proportional to 911,128.96, 1,257,145.68 and 528,928.84
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Solution
The fourth proportional to 911,128.96, 1,257,145.68 and 528,928.84 is: 729,798.56
Step by Step Solution
- Step 1: Write the proportion equation
911,128.96 : 1,257,145.68 = 528,928.84 : x - Step 2: Convert to fraction form
911,128.96/1,257,145.68 = 528,928.84/x - Step 3: Cross multiply
911,128.96x = 1,257,145.68 × 528,928.84 - Step 4: Simplify right side
911,128.96x = 664,940,606,233.41 - Step 5: Solve for x
x = 664,940,606,233.41/911,128.96 - Step 6: Final answer
x = 729,798.56
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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.