Finding the Fourth Proportional to 812,783.69, 1,121,678.41 and 450,207.50
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Solution
The fourth proportional to 812,783.69, 1,121,678.41 and 450,207.50 is: 621,306.81
Step by Step Solution
- Step 1: Write the proportion equation
812,783.69 : 1,121,678.41 = 450,207.50 : x - Step 2: Convert to fraction form
812,783.69/1,121,678.41 = 450,207.50/x - Step 3: Cross multiply
812,783.69x = 1,121,678.41 × 450,207.50 - Step 4: Simplify right side
812,783.69x = 504,988,039,504.58 - Step 5: Solve for x
x = 504,988,039,504.58/812,783.69 - Step 6: Final answer
x = 621,306.81
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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.