Finding the Fourth Proportional to 742,168.13, 1,024,193.99 and 402,636.38
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Solution
The fourth proportional to 742,168.13, 1,024,193.99 and 402,636.38 is: 555,639.27
Step by Step Solution
- Step 1: Write the proportion equation
742,168.13 : 1,024,193.99 = 402,636.38 : x - Step 2: Convert to fraction form
742,168.13/1,024,193.99 = 402,636.38/x - Step 3: Cross multiply
742,168.13x = 1,024,193.99 × 402,636.38 - Step 4: Simplify right side
742,168.13x = 412,377,756,436.98 - Step 5: Solve for x
x = 412,377,756,436.98/742,168.13 - Step 6: Final answer
x = 555,639.27
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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.