Finding the Fourth Proportional to 812,707.74, 1,121,487.41 and 450,109.98
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Solution
The fourth proportional to 812,707.74, 1,121,487.41 and 450,109.98 is: 621,124.48
Step by Step Solution
- Step 1: Write the proportion equation
812,707.74 : 1,121,487.41 = 450,109.98 : x - Step 2: Convert to fraction form
812,707.74/1,121,487.41 = 450,109.98/x - Step 3: Cross multiply
812,707.74x = 1,121,487.41 × 450,109.98 - Step 4: Simplify right side
812,707.74x = 504,792,675,685.35 - Step 5: Solve for x
x = 504,792,675,685.35/812,707.74 - Step 6: Final answer
x = 621,124.48
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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.