Finding the Fourth Proportional to 801,422.84, 1,105,977.12 and 438,840.92
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Solution
The fourth proportional to 801,422.84, 1,105,977.12 and 438,840.92 is: 605,607.92
Step by Step Solution
- Step 1: Write the proportion equation
801,422.84 : 1,105,977.12 = 438,840.92 : x - Step 2: Convert to fraction form
801,422.84/1,105,977.12 = 438,840.92/x - Step 3: Cross multiply
801,422.84x = 1,105,977.12 × 438,840.92 - Step 4: Simplify right side
801,422.84x = 485,348,016,839.75 - Step 5: Solve for x
x = 485,348,016,839.75/801,422.84 - Step 6: Final answer
x = 605,607.92
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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.