Finding the Fourth Proportional to 620,101.22, 855,523.62 and 390,679.00
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Solution
The fourth proportional to 620,101.22, 855,523.62 and 390,679.00 is: 539,000.89
Step by Step Solution
- Step 1: Write the proportion equation
620,101.22 : 855,523.62 = 390,679.00 : x - Step 2: Convert to fraction form
620,101.22/855,523.62 = 390,679.00/x - Step 3: Cross multiply
620,101.22x = 855,523.62 × 390,679.00 - Step 4: Simplify right side
620,101.22x = 334,235,110,199.17 - Step 5: Solve for x
x = 334,235,110,199.17/620,101.22 - Step 6: Final answer
x = 539,000.89
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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.