Finding the Fourth Proportional to 639,386.10, 957,815.55 and 414,902.70
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Solution
The fourth proportional to 639,386.10, 957,815.55 and 414,902.70 is: 621,534.09
Step by Step Solution
- Step 1: Write the proportion equation
639,386.10 : 957,815.55 = 414,902.70 : x - Step 2: Convert to fraction form
639,386.10/957,815.55 = 414,902.70/x - Step 3: Cross multiply
639,386.10x = 957,815.55 × 414,902.70 - Step 4: Simplify right side
639,386.10x = 397,400,257,796.99 - Step 5: Solve for x
x = 397,400,257,796.99/639,386.10 - Step 6: Final answer
x = 621,534.09
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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.