Finding the Fourth Proportional to 406,901.40, 610,409.70 and 126,389.40
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Solution
The fourth proportional to 406,901.40, 610,409.70 and 126,389.40 is: 189,601.99
Step by Step Solution
- Step 1: Write the proportion equation
406,901.40 : 610,409.70 = 126,389.40 : x - Step 2: Convert to fraction form
406,901.40/610,409.70 = 126,389.40/x - Step 3: Cross multiply
406,901.40x = 610,409.70 × 126,389.40 - Step 4: Simplify right side
406,901.40x = 77,149,315,737.18 - Step 5: Solve for x
x = 77,149,315,737.18/406,901.40 - Step 6: Final answer
x = 189,601.99
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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.