Finding the Fourth Proportional to 814,223.70, 1,221,335.55 and 440,975.70
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Solution
The fourth proportional to 814,223.70, 1,221,335.55 and 440,975.70 is: 661,463.55
Step by Step Solution
- Step 1: Write the proportion equation
814,223.70 : 1,221,335.55 = 440,975.70 : x - Step 2: Convert to fraction form
814,223.70/1,221,335.55 = 440,975.70/x - Step 3: Cross multiply
814,223.70x = 1,221,335.55 × 440,975.70 - Step 4: Simplify right side
814,223.70x = 538,579,299,096.14 - Step 5: Solve for x
x = 538,579,299,096.14/814,223.70 - Step 6: Final answer
x = 661,463.55
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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.