Finding the Fourth Proportional to 667,207.80, 1,000,811.70 and 430,817.40
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Solution
The fourth proportional to 667,207.80, 1,000,811.70 and 430,817.40 is: 646,226.10
Step by Step Solution
- Step 1: Write the proportion equation
667,207.80 : 1,000,811.70 = 430,817.40 : x - Step 2: Convert to fraction form
667,207.80/1,000,811.70 = 430,817.40/x - Step 3: Cross multiply
667,207.80x = 1,000,811.70 × 430,817.40 - Step 4: Simplify right side
667,207.80x = 431,167,094,483.58 - Step 5: Solve for x
x = 431,167,094,483.58/667,207.80 - Step 6: Final answer
x = 646,226.10
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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.