Finding the Fourth Proportional to 628,704.38, 943,056.88 and 207,980.26
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Solution
The fourth proportional to 628,704.38, 943,056.88 and 207,980.26 is: 311,970.49
Step by Step Solution
- Step 1: Write the proportion equation
628,704.38 : 943,056.88 = 207,980.26 : x - Step 2: Convert to fraction form
628,704.38/943,056.88 = 207,980.26/x - Step 3: Cross multiply
628,704.38x = 943,056.88 × 207,980.26 - Step 4: Simplify right side
628,704.38x = 196,137,215,097.19 - Step 5: Solve for x
x = 196,137,215,097.19/628,704.38 - Step 6: Final answer
x = 311,970.49
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Half scale
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Double scale
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Similar ratio
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1.5x scale
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.