Finding the Fourth Proportional to 420,578.56, 630,867.84 and 125,090.56
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Solution
The fourth proportional to 420,578.56, 630,867.84 and 125,090.56 is: 187,635.84
Step by Step Solution
- Step 1: Write the proportion equation
420,578.56 : 630,867.84 = 125,090.56 : x - Step 2: Convert to fraction form
420,578.56/630,867.84 = 125,090.56/x - Step 3: Cross multiply
420,578.56x = 630,867.84 × 125,090.56 - Step 4: Simplify right side
420,578.56x = 78,915,611,391.59 - Step 5: Solve for x
x = 78,915,611,391.59/420,578.56 - Step 6: Final answer
x = 187,635.84
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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.