Finding the Fourth Proportional to 420,981.51, 580,202.96 and 318,762.75
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Solution
The fourth proportional to 420,981.51, 580,202.96 and 318,762.75 is: 439,323.55
Step by Step Solution
- Step 1: Write the proportion equation
420,981.51 : 580,202.96 = 318,762.75 : x - Step 2: Convert to fraction form
420,981.51/580,202.96 = 318,762.75/x - Step 3: Cross multiply
420,981.51x = 580,202.96 × 318,762.75 - Step 4: Simplify right side
420,981.51x = 184,947,089,493.93 - Step 5: Solve for x
x = 184,947,089,493.93/420,981.51 - Step 6: Final answer
x = 439,323.55
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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.