Finding the Fourth Proportional to 810,878.55, 1,118,826.80 and 484,128.09
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Solution
The fourth proportional to 810,878.55, 1,118,826.80 and 484,128.09 is: 667,985.96
Step by Step Solution
- Step 1: Write the proportion equation
810,878.55 : 1,118,826.80 = 484,128.09 : x - Step 2: Convert to fraction form
810,878.55/1,118,826.80 = 484,128.09/x - Step 3: Cross multiply
810,878.55x = 1,118,826.80 × 484,128.09 - Step 4: Simplify right side
810,878.55x = 541,655,482,481.26 - Step 5: Solve for x
x = 541,655,482,481.26/810,878.55 - Step 6: Final answer
x = 667,985.96
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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.