Finding the Fourth Proportional to 820,384.68, 1,132,128.63 and 457,804.65
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Solution
The fourth proportional to 820,384.68, 1,132,128.63 and 457,804.65 is: 631,769.17
Step by Step Solution
- Step 1: Write the proportion equation
820,384.68 : 1,132,128.63 = 457,804.65 : x - Step 2: Convert to fraction form
820,384.68/1,132,128.63 = 457,804.65/x - Step 3: Cross multiply
820,384.68x = 1,132,128.63 × 457,804.65 - Step 4: Simplify right side
820,384.68x = 518,293,751,212.13 - Step 5: Solve for x
x = 518,293,751,212.13/820,384.68 - Step 6: Final answer
x = 631,769.17
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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.