Finding the Fourth Proportional to 813,471.62, 1,122,588.90 and 445,948.11
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Solution
The fourth proportional to 813,471.62, 1,122,588.90 and 445,948.11 is: 615,407.33
Step by Step Solution
- Step 1: Write the proportion equation
813,471.62 : 1,122,588.90 = 445,948.11 : x - Step 2: Convert to fraction form
813,471.62/1,122,588.90 = 445,948.11/x - Step 3: Cross multiply
813,471.62x = 1,122,588.90 × 445,948.11 - Step 4: Simplify right side
813,471.62x = 500,616,398,261.98 - Step 5: Solve for x
x = 500,616,398,261.98/813,471.62 - Step 6: Final answer
x = 615,407.33
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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.