Finding the Fourth Proportional to 1,110,388.32, 1,532,221.79 and 645,169.68
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Solution
The fourth proportional to 1,110,388.32, 1,532,221.79 and 645,169.68 is: 890,267.86
Step by Step Solution
- Step 1: Write the proportion equation
1,110,388.32 : 1,532,221.79 = 645,169.68 : x - Step 2: Convert to fraction form
1,110,388.32/1,532,221.79 = 645,169.68/x - Step 3: Cross multiply
1,110,388.32x = 1,532,221.79 × 645,169.68 - Step 4: Simplify right side
1,110,388.32x = 988,543,038,717.48 - Step 5: Solve for x
x = 988,543,038,717.48/1,110,388.32 - Step 6: Final answer
x = 890,267.86
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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.