Finding the Fourth Proportional to 639,422.10, 957,869.55 and 414,938.70
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Solution
The fourth proportional to 639,422.10, 957,869.55 and 414,938.70 is: 621,588.06
Step by Step Solution
- Step 1: Write the proportion equation
639,422.10 : 957,869.55 = 414,938.70 : x - Step 2: Convert to fraction form
639,422.10/957,869.55 = 414,938.70/x - Step 3: Cross multiply
639,422.10x = 957,869.55 × 414,938.70 - Step 4: Simplify right side
639,422.10x = 397,457,145,846.59 - Step 5: Solve for x
x = 397,457,145,846.59/639,422.10 - Step 6: Final answer
x = 621,588.06
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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.