Finding the Fourth Proportional to 870,429.78, 1,201,279.41 and 488,458.08
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Solution
The fourth proportional to 870,429.78, 1,201,279.41 and 488,458.08 is: 674,120.59
Step by Step Solution
- Step 1: Write the proportion equation
870,429.78 : 1,201,279.41 = 488,458.08 : x - Step 2: Convert to fraction form
870,429.78/1,201,279.41 = 488,458.08/x - Step 3: Cross multiply
870,429.78x = 1,201,279.41 × 488,458.08 - Step 4: Simplify right side
870,429.78x = 586,774,634,152.13 - Step 5: Solve for x
x = 586,774,634,152.13/870,429.78 - Step 6: Final answer
x = 674,120.59
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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.