Finding the Fourth Proportional to 403,409.70, 605,114.55 and 338,455.80
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Solution
The fourth proportional to 403,409.70, 605,114.55 and 338,455.80 is: 507,683.70
Step by Step Solution
- Step 1: Write the proportion equation
403,409.70 : 605,114.55 = 338,455.80 : x - Step 2: Convert to fraction form
403,409.70/605,114.55 = 338,455.80/x - Step 3: Cross multiply
403,409.70x = 605,114.55 × 338,455.80 - Step 4: Simplify right side
403,409.70x = 204,804,529,111.89 - Step 5: Solve for x
x = 204,804,529,111.89/403,409.70 - Step 6: Final answer
x = 507,683.70
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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.