Finding the Fourth Proportional to 431,036.78, 646,554.74 and 115,485.08
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Solution
The fourth proportional to 431,036.78, 646,554.74 and 115,485.08 is: 173,227.50
Step by Step Solution
- Step 1: Write the proportion equation
431,036.78 : 646,554.74 = 115,485.08 : x - Step 2: Convert to fraction form
431,036.78/646,554.74 = 115,485.08/x - Step 3: Cross multiply
431,036.78x = 646,554.74 × 115,485.08 - Step 4: Simplify right side
431,036.78x = 74,667,425,873.28 - Step 5: Solve for x
x = 74,667,425,873.28/431,036.78 - Step 6: Final answer
x = 173,227.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.