Finding the Fourth Proportional to 1,292,408.21, 1,783,554.60 and 719,487.11
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Solution
The fourth proportional to 1,292,408.21, 1,783,554.60 and 719,487.11 is: 992,909.62
Step by Step Solution
- Step 1: Write the proportion equation
1,292,408.21 : 1,783,554.60 = 719,487.11 : x - Step 2: Convert to fraction form
1,292,408.21/1,783,554.60 = 719,487.11/x - Step 3: Cross multiply
1,292,408.21x = 1,783,554.60 × 719,487.11 - Step 4: Simplify right side
1,292,408.21x = 1,283,244,544,681.21 - Step 5: Solve for x
x = 1,283,244,544,681.21/1,292,408.21 - Step 6: Final answer
x = 992,909.62
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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.