Finding the Fourth Proportional to 677,689.76, 935,241.44 and 405,705.26
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Solution
The fourth proportional to 677,689.76, 935,241.44 and 405,705.26 is: 559,890.96
Step by Step Solution
- Step 1: Write the proportion equation
677,689.76 : 935,241.44 = 405,705.26 : x - Step 2: Convert to fraction form
677,689.76/935,241.44 = 405,705.26/x - Step 3: Cross multiply
677,689.76x = 935,241.44 × 405,705.26 - Step 4: Simplify right side
677,689.76x = 379,432,364,873.24 - Step 5: Solve for x
x = 379,432,364,873.24/677,689.76 - Step 6: Final answer
x = 559,890.96
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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.