Finding the Fourth Proportional to 1,399,566.20, 2,099,349.30 and 453,615.80
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Solution
The fourth proportional to 1,399,566.20, 2,099,349.30 and 453,615.80 is: 680,423.70
Step by Step Solution
- Step 1: Write the proportion equation
1,399,566.20 : 2,099,349.30 = 453,615.80 : x - Step 2: Convert to fraction form
1,399,566.20/2,099,349.30 = 453,615.80/x - Step 3: Cross multiply
1,399,566.20x = 2,099,349.30 × 453,615.80 - Step 4: Simplify right side
1,399,566.20x = 952,298,012,198.94 - Step 5: Solve for x
x = 952,298,012,198.94/1,399,566.20 - Step 6: Final answer
x = 680,423.70
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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.