Finding the Fourth Proportional to 870,678.98, 1,201,471.11 and 488,631.95
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Solution
The fourth proportional to 870,678.98, 1,201,471.11 and 488,631.95 is: 674,275.12
Step by Step Solution
- Step 1: Write the proportion equation
870,678.98 : 1,201,471.11 = 488,631.95 : x - Step 2: Convert to fraction form
870,678.98/1,201,471.11 = 488,631.95/x - Step 3: Cross multiply
870,678.98x = 1,201,471.11 × 488,631.95 - Step 4: Simplify right side
870,678.98x = 587,077,171,347.97 - Step 5: Solve for x
x = 587,077,171,347.97/870,678.98 - Step 6: Final answer
x = 674,275.12
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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.