Finding the Fourth Proportional to 681,119.70, 1,021,679.55 and 681,119.70
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Solution
The fourth proportional to 681,119.70, 1,021,679.55 and 681,119.70 is: 1,021,679.55
Step by Step Solution
- Step 1: Write the proportion equation
681,119.70 : 1,021,679.55 = 681,119.70 : x - Step 2: Convert to fraction form
681,119.70/1,021,679.55 = 681,119.70/x - Step 3: Cross multiply
681,119.70x = 1,021,679.55 × 681,119.70 - Step 4: Simplify right side
681,119.70x = 695,886,068,592.14 - Step 5: Solve for x
x = 695,886,068,592.14/681,119.70 - Step 6: Final answer
x = 1,021,679.55
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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.