Finding the Fourth Proportional to 390,984.78, 586,523.34 and 124,651.92
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Solution
The fourth proportional to 390,984.78, 586,523.34 and 124,651.92 is: 186,992.60
Step by Step Solution
- Step 1: Write the proportion equation
390,984.78 : 586,523.34 = 124,651.92 : x - Step 2: Convert to fraction form
390,984.78/586,523.34 = 124,651.92/x - Step 3: Cross multiply
390,984.78x = 586,523.34 × 124,651.92 - Step 4: Simplify right side
390,984.78x = 73,111,260,455.81 - Step 5: Solve for x
x = 73,111,260,455.81/390,984.78 - Step 6: Final answer
x = 186,992.60
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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.