Finding the Fourth Proportional to 688,137.11, 949,246.21 and 639,425.78
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Solution
The fourth proportional to 688,137.11, 949,246.21 and 639,425.78 is: 882,051.69
Step by Step Solution
- Step 1: Write the proportion equation
688,137.11 : 949,246.21 = 639,425.78 : x - Step 2: Convert to fraction form
688,137.11/949,246.21 = 639,425.78/x - Step 3: Cross multiply
688,137.11x = 949,246.21 × 639,425.78 - Step 4: Simplify right side
688,137.11x = 606,972,499,161.07 - Step 5: Solve for x
x = 606,972,499,161.07/688,137.11 - Step 6: Final answer
x = 882,051.69
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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.