Finding the Fourth Proportional to 403,219.80, 604,829.70 and 285,121.80
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Solution
The fourth proportional to 403,219.80, 604,829.70 and 285,121.80 is: 427,682.70
Step by Step Solution
- Step 1: Write the proportion equation
403,219.80 : 604,829.70 = 285,121.80 : x - Step 2: Convert to fraction form
403,219.80/604,829.70 = 285,121.80/x - Step 3: Cross multiply
403,219.80x = 604,829.70 × 285,121.80 - Step 4: Simplify right side
403,219.80x = 172,450,132,757.46 - Step 5: Solve for x
x = 172,450,132,757.46/403,219.80 - Step 6: Final answer
x = 427,682.70
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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.