Finding the Fourth Proportional to 1,383,267.70, 1,908,905.64 and 771,421.12
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Solution
The fourth proportional to 1,383,267.70, 1,908,905.64 and 771,421.12 is: 1,064,559.03
Step by Step Solution
- Step 1: Write the proportion equation
1,383,267.70 : 1,908,905.64 = 771,421.12 : x - Step 2: Convert to fraction form
1,383,267.70/1,908,905.64 = 771,421.12/x - Step 3: Cross multiply
1,383,267.70x = 1,908,905.64 × 771,421.12 - Step 4: Simplify right side
1,383,267.70x = 1,472,570,126,783.12 - Step 5: Solve for x
x = 1,472,570,126,783.12/1,383,267.70 - Step 6: Final answer
x = 1,064,559.03
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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.