Finding the Fourth Proportional to 926,920.79, 1,388,745.93 and 811,783.88
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Solution
The fourth proportional to 926,920.79, 1,388,745.93 and 811,783.88 is: 1,216,243.69
Step by Step Solution
- Step 1: Write the proportion equation
926,920.79 : 1,388,745.93 = 811,783.88 : x - Step 2: Convert to fraction form
926,920.79/1,388,745.93 = 811,783.88/x - Step 3: Cross multiply
926,920.79x = 1,388,745.93 × 811,783.88 - Step 4: Simplify right side
926,920.79x = 1,127,361,559,389.61 - Step 5: Solve for x
x = 1,127,361,559,389.61/926,920.79 - Step 6: Final answer
x = 1,216,243.69
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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.