Finding the Fourth Proportional to 1,029,342.99, 1,420,153.05 and 621,289.79
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Solution
The fourth proportional to 1,029,342.99, 1,420,153.05 and 621,289.79 is: 857,174.54
Step by Step Solution
- Step 1: Write the proportion equation
1,029,342.99 : 1,420,153.05 = 621,289.79 : x - Step 2: Convert to fraction form
1,029,342.99/1,420,153.05 = 621,289.79/x - Step 3: Cross multiply
1,029,342.99x = 1,420,153.05 × 621,289.79 - Step 4: Simplify right side
1,029,342.99x = 882,326,598,745.37 - Step 5: Solve for x
x = 882,326,598,745.37/1,029,342.99 - Step 6: Final answer
x = 857,174.54
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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.