Finding the Fourth Proportional to 812,811.96, 1,121,631.12 and 450,214.65
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Solution
The fourth proportional to 812,811.96, 1,121,631.12 and 450,214.65 is: 621,268.86
Step by Step Solution
- Step 1: Write the proportion equation
812,811.96 : 1,121,631.12 = 450,214.65 : x - Step 2: Convert to fraction form
812,811.96/1,121,631.12 = 450,214.65/x - Step 3: Cross multiply
812,811.96x = 1,121,631.12 × 450,214.65 - Step 4: Simplify right side
812,811.96x = 504,974,762,119.91 - Step 5: Solve for x
x = 504,974,762,119.91/812,811.96 - Step 6: Final answer
x = 621,268.86
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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.