Finding the Fourth Proportional to 1,129,197.51, 1,558,323.77 and 639,128.07
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Solution
The fourth proportional to 1,129,197.51, 1,558,323.77 and 639,128.07 is: 882,014.40
Step by Step Solution
- Step 1: Write the proportion equation
1,129,197.51 : 1,558,323.77 = 639,128.07 : x - Step 2: Convert to fraction form
1,129,197.51/1,558,323.77 = 639,128.07/x - Step 3: Cross multiply
1,129,197.51x = 1,558,323.77 × 639,128.07 - Step 4: Simplify right side
1,129,197.51x = 995,968,460,359.58 - Step 5: Solve for x
x = 995,968,460,359.58/1,129,197.51 - Step 6: Final answer
x = 882,014.40
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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.