Finding the Fourth Proportional to 817,724.16, 1,128,450.72 and 455,142.24
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Solution
The fourth proportional to 817,724.16, 1,128,450.72 and 455,142.24 is: 628,091.49
Step by Step Solution
- Step 1: Write the proportion equation
817,724.16 : 1,128,450.72 = 455,142.24 : x - Step 2: Convert to fraction form
817,724.16/1,128,450.72 = 455,142.24/x - Step 3: Cross multiply
817,724.16x = 1,128,450.72 × 455,142.24 - Step 4: Simplify right side
817,724.16x = 513,605,588,430.41 - Step 5: Solve for x
x = 513,605,588,430.41/817,724.16 - Step 6: Final answer
x = 628,091.49
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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.