Finding the Fourth Proportional to 783,119.70, 1,174,679.55 and 534,287.70
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Solution
The fourth proportional to 783,119.70, 1,174,679.55 and 534,287.70 is: 801,431.55
Step by Step Solution
- Step 1: Write the proportion equation
783,119.70 : 1,174,679.55 = 534,287.70 : x - Step 2: Convert to fraction form
783,119.70/1,174,679.55 = 534,287.70/x - Step 3: Cross multiply
783,119.70x = 1,174,679.55 × 534,287.70 - Step 4: Simplify right side
783,119.70x = 627,616,835,006.54 - Step 5: Solve for x
x = 627,616,835,006.54/783,119.70 - Step 6: Final answer
x = 801,431.55
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Double scale
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Similar ratio
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1.5x scale
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.