Finding the Fourth Proportional to 742,079.21, 1,024,069.66 and 419,782.46
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Solution
The fourth proportional to 742,079.21, 1,024,069.66 and 419,782.46 is: 579,299.99
Step by Step Solution
- Step 1: Write the proportion equation
742,079.21 : 1,024,069.66 = 419,782.46 : x - Step 2: Convert to fraction form
742,079.21/1,024,069.66 = 419,782.46/x - Step 3: Cross multiply
742,079.21x = 1,024,069.66 × 419,782.46 - Step 4: Simplify right side
742,079.21x = 429,886,474,916.36 - Step 5: Solve for x
x = 429,886,474,916.36/742,079.21 - Step 6: Final answer
x = 579,299.99
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1.5x scale
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.