Finding the Fourth Proportional to 1,208,257.19, 1,667,337.84 and 664,415.90
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Solution
The fourth proportional to 1,208,257.19, 1,667,337.84 and 664,415.90 is: 916,862.55
Step by Step Solution
- Step 1: Write the proportion equation
1,208,257.19 : 1,667,337.84 = 664,415.90 : x - Step 2: Convert to fraction form
1,208,257.19/1,667,337.84 = 664,415.90/x - Step 3: Cross multiply
1,208,257.19x = 1,667,337.84 × 664,415.90 - Step 4: Simplify right side
1,208,257.19x = 1,107,805,763,230.97 - Step 5: Solve for x
x = 1,107,805,763,230.97/1,208,257.19 - Step 6: Final answer
x = 916,862.55
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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.