Finding the Fourth Proportional to 420,660.48, 580,510.72 and 229,672.96
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Solution
The fourth proportional to 420,660.48, 580,510.72 and 229,672.96 is: 316,948.28
Step by Step Solution
- Step 1: Write the proportion equation
420,660.48 : 580,510.72 = 229,672.96 : x - Step 2: Convert to fraction form
420,660.48/580,510.72 = 229,672.96/x - Step 3: Cross multiply
420,660.48x = 580,510.72 × 229,672.96 - Step 4: Simplify right side
420,660.48x = 133,327,615,374.13 - Step 5: Solve for x
x = 133,327,615,374.13/420,660.48 - Step 6: Final answer
x = 316,948.28
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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.