Finding the Fourth Proportional to 1,129,203.01, 1,558,331.36 and 639,133.57
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Solution
The fourth proportional to 1,129,203.01, 1,558,331.36 and 639,133.57 is: 882,021.99
Step by Step Solution
- Step 1: Write the proportion equation
1,129,203.01 : 1,558,331.36 = 639,133.57 : x - Step 2: Convert to fraction form
1,129,203.01/1,558,331.36 = 639,133.57/x - Step 3: Cross multiply
1,129,203.01x = 1,558,331.36 × 639,133.57 - Step 4: Simplify right side
1,129,203.01x = 995,981,885,359.76 - Step 5: Solve for x
x = 995,981,885,359.76/1,129,203.01 - Step 6: Final answer
x = 882,021.99
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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.