Finding the Fourth Proportional to 812,889.56, 1,121,772.76 and 450,312.23
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Solution
The fourth proportional to 812,889.56, 1,121,772.76 and 450,312.23 is: 621,422.66
Step by Step Solution
- Step 1: Write the proportion equation
812,889.56 : 1,121,772.76 = 450,312.23 : x - Step 2: Convert to fraction form
812,889.56/1,121,772.76 = 450,312.23/x - Step 3: Cross multiply
812,889.56x = 1,121,772.76 × 450,312.23 - Step 4: Simplify right side
812,889.56x = 505,147,986,374.21 - Step 5: Solve for x
x = 505,147,986,374.21/812,889.56 - Step 6: Final answer
x = 621,422.66
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1.5x scale
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.