Finding the Fourth Proportional to 642,129.48, 886,129.74 and 370,197.90
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Solution
The fourth proportional to 642,129.48, 886,129.74 and 370,197.90 is: 510,867.95
Step by Step Solution
- Step 1: Write the proportion equation
642,129.48 : 886,129.74 = 370,197.90 : x - Step 2: Convert to fraction form
642,129.48/886,129.74 = 370,197.90/x - Step 3: Cross multiply
642,129.48x = 886,129.74 × 370,197.90 - Step 4: Simplify right side
642,129.48x = 328,043,368,875.55 - Step 5: Solve for x
x = 328,043,368,875.55/642,129.48 - Step 6: Final answer
x = 510,867.95
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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.