Finding the Fourth Proportional to 858,415.30, 1,287,110.95 and 526,229.70
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Solution
The fourth proportional to 858,415.30, 1,287,110.95 and 526,229.70 is: 789,030.68
Step by Step Solution
- Step 1: Write the proportion equation
858,415.30 : 1,287,110.95 = 526,229.70 : x - Step 2: Convert to fraction form
858,415.30/1,287,110.95 = 526,229.70/x - Step 3: Cross multiply
858,415.30x = 1,287,110.95 × 526,229.70 - Step 4: Simplify right side
858,415.30x = 677,316,009,085.22 - Step 5: Solve for x
x = 677,316,009,085.22/858,415.30 - Step 6: Final answer
x = 789,030.68
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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.