Finding the Fourth Proportional to 1,129,861.50, 1,558,829.49 and 639,764.03
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Solution
The fourth proportional to 1,129,861.50, 1,558,829.49 and 639,764.03 is: 882,659.54
Step by Step Solution
- Step 1: Write the proportion equation
1,129,861.50 : 1,558,829.49 = 639,764.03 : x - Step 2: Convert to fraction form
1,129,861.50/1,558,829.49 = 639,764.03/x - Step 3: Cross multiply
1,129,861.50x = 1,558,829.49 × 639,764.03 - Step 4: Simplify right side
1,129,861.50x = 997,283,028,811.10 - Step 5: Solve for x
x = 997,283,028,811.10/1,129,861.50 - Step 6: Final answer
x = 882,659.54
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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.