Finding the Fourth Proportional to 638,679.84, 956,463.49 and 422,406.81
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Solution
The fourth proportional to 638,679.84, 956,463.49 and 422,406.81 is: 632,580.93
Step by Step Solution
- Step 1: Write the proportion equation
638,679.84 : 956,463.49 = 422,406.81 : x - Step 2: Convert to fraction form
638,679.84/956,463.49 = 422,406.81/x - Step 3: Cross multiply
638,679.84x = 956,463.49 × 422,406.81 - Step 4: Simplify right side
638,679.84x = 404,016,684,798.02 - Step 5: Solve for x
x = 404,016,684,798.02/638,679.84 - Step 6: Final answer
x = 632,580.93
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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.