Finding the Fourth Proportional to 605,135.90, 909,672.15 and 428,863.70
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Solution
The fourth proportional to 605,135.90, 909,672.15 and 428,863.70 is: 644,690.50
Step by Step Solution
- Step 1: Write the proportion equation
605,135.90 : 909,672.15 = 428,863.70 : x - Step 2: Convert to fraction form
605,135.90/909,672.15 = 428,863.70/x - Step 3: Cross multiply
605,135.90x = 909,672.15 × 428,863.70 - Step 4: Simplify right side
605,135.90x = 390,125,364,035.96 - Step 5: Solve for x
x = 390,125,364,035.96/605,135.90 - Step 6: Final answer
x = 644,690.50
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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.