Finding the Fourth Proportional to 813,187.09, 1,122,167.86 and 469,037.13
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Solution
The fourth proportional to 813,187.09, 1,122,167.86 and 469,037.13 is: 647,253.75
Step by Step Solution
- Step 1: Write the proportion equation
813,187.09 : 1,122,167.86 = 469,037.13 : x - Step 2: Convert to fraction form
813,187.09/1,122,167.86 = 469,037.13/x - Step 3: Cross multiply
813,187.09x = 1,122,167.86 × 469,037.13 - Step 4: Simplify right side
813,187.09x = 526,338,392,432.64 - Step 5: Solve for x
x = 526,338,392,432.64/813,187.09 - Step 6: Final answer
x = 647,253.75
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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.