Finding the Fourth Proportional to 1,147,565.84, 1,583,640.69 and 638,257.28
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Solution
The fourth proportional to 1,147,565.84, 1,583,640.69 and 638,257.28 is: 880,794.95
Step by Step Solution
- Step 1: Write the proportion equation
1,147,565.84 : 1,583,640.69 = 638,257.28 : x - Step 2: Convert to fraction form
1,147,565.84/1,583,640.69 = 638,257.28/x - Step 3: Cross multiply
1,147,565.84x = 1,583,640.69 × 638,257.28 - Step 4: Simplify right side
1,147,565.84x = 1,010,770,199,296.72 - Step 5: Solve for x
x = 1,010,770,199,296.72/1,147,565.84 - Step 6: Final answer
x = 880,794.95
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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.