Finding the Fourth Proportional to 628,605.97, 867,476.25 and 342,128.14
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Solution
The fourth proportional to 628,605.97, 867,476.25 and 342,128.14 is: 472,136.84
Step by Step Solution
- Step 1: Write the proportion equation
628,605.97 : 867,476.25 = 342,128.14 : x - Step 2: Convert to fraction form
628,605.97/867,476.25 = 342,128.14/x - Step 3: Cross multiply
628,605.97x = 867,476.25 × 342,128.14 - Step 4: Simplify right side
628,605.97x = 296,788,033,737.98 - Step 5: Solve for x
x = 296,788,033,737.98/628,605.97 - Step 6: Final answer
x = 472,136.84
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1.5x scale
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.