Finding the Fourth Proportional to 327,888,905.80, 491,833,358.70 and 85,551,809.80
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Solution
The fourth proportional to 327,888,905.80, 491,833,358.70 and 85,551,809.80 is: 128,327,714.70
Step by Step Solution
- Step 1: Write the proportion equation
327,888,905.80 : 491,833,358.70 = 85,551,809.80 : x - Step 2: Convert to fraction form
327,888,905.80/491,833,358.70 = 85,551,809.80/x - Step 3: Cross multiply
327,888,905.80x = 491,833,358.70 × 85,551,809.80 - Step 4: Simplify right side
327,888,905.80x = 42,077,233,956,797,576 - Step 5: Solve for x
x = 42,077,233,956,797,576/327,888,905.80 - Step 6: Final answer
x = 128,327,714.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.