Finding the Fourth Proportional to 628,605.99, 867,476.25 and 342,128.12
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Solution
The fourth proportional to 628,605.99, 867,476.25 and 342,128.12 is: 472,136.79
Step by Step Solution
- Step 1: Write the proportion equation
628,605.99 : 867,476.25 = 342,128.12 : x - Step 2: Convert to fraction form
628,605.99/867,476.25 = 342,128.12/x - Step 3: Cross multiply
628,605.99x = 867,476.25 × 342,128.12 - Step 4: Simplify right side
628,605.99x = 296,788,014,219.77 - Step 5: Solve for x
x = 296,788,014,219.77/628,605.99 - Step 6: Final answer
x = 472,136.79
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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.