Finding the Fourth Proportional to 813,469.69, 1,122,586.23 and 445,946.17
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Solution
The fourth proportional to 813,469.69, 1,122,586.23 and 445,946.17 is: 615,404.65
Step by Step Solution
- Step 1: Write the proportion equation
813,469.69 : 1,122,586.23 = 445,946.17 : x - Step 2: Convert to fraction form
813,469.69/1,122,586.23 = 445,946.17/x - Step 3: Cross multiply
813,469.69x = 1,122,586.23 × 445,946.17 - Step 4: Simplify right side
813,469.69x = 500,613,029,763.24 - Step 5: Solve for x
x = 500,613,029,763.24/813,469.69 - Step 6: Final answer
x = 615,404.65
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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.