Finding the Fourth Proportional to 691,813.40, 1,038,497.70 and 534,738.20
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Solution
The fourth proportional to 691,813.40, 1,038,497.70 and 534,738.20 is: 802,708.35
Step by Step Solution
- Step 1: Write the proportion equation
691,813.40 : 1,038,497.70 = 534,738.20 : x - Step 2: Convert to fraction form
691,813.40/1,038,497.70 = 534,738.20/x - Step 3: Cross multiply
691,813.40x = 1,038,497.70 × 534,738.20 - Step 4: Simplify right side
691,813.40x = 555,324,390,802.14 - Step 5: Solve for x
x = 555,324,390,802.14/691,813.40 - Step 6: Final answer
x = 802,708.35
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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.