Finding the Fourth Proportional to 628,736.99, 867,657.15 and 342,259.23
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Solution
The fourth proportional to 628,736.99, 867,657.15 and 342,259.23 is: 472,317.79
Step by Step Solution
- Step 1: Write the proportion equation
628,736.99 : 867,657.15 = 342,259.23 : x - Step 2: Convert to fraction form
628,736.99/867,657.15 = 342,259.23/x - Step 3: Cross multiply
628,736.99x = 867,657.15 × 342,259.23 - Step 4: Simplify right side
628,736.99x = 296,963,666,351.70 - Step 5: Solve for x
x = 296,963,666,351.70/628,736.99 - Step 6: Final answer
x = 472,317.79
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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.