Finding the Fourth Proportional to 458,079.10, 631,734.99 and 286,012.60
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Solution
The fourth proportional to 458,079.10, 631,734.99 and 286,012.60 is: 394,438.79
Step by Step Solution
- Step 1: Write the proportion equation
458,079.10 : 631,734.99 = 286,012.60 : x - Step 2: Convert to fraction form
458,079.10/631,734.99 = 286,012.60/x - Step 3: Cross multiply
458,079.10x = 631,734.99 × 286,012.60 - Step 4: Simplify right side
458,079.10x = 180,684,167,000.87 - Step 5: Solve for x
x = 180,684,167,000.87/458,079.10 - Step 6: Final answer
x = 394,438.79
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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.