Finding the Fourth Proportional to 2,128,192.36, 3,187,203.42 and 1,179,209.32
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Solution
The fourth proportional to 2,128,192.36, 3,187,203.42 and 1,179,209.32 is: 1,765,996.37
Step by Step Solution
- Step 1: Write the proportion equation
2,128,192.36 : 3,187,203.42 = 1,179,209.32 : x - Step 2: Convert to fraction form
2,128,192.36/3,187,203.42 = 1,179,209.32/x - Step 3: Cross multiply
2,128,192.36x = 3,187,203.42 × 1,179,209.32 - Step 4: Simplify right side
2,128,192.36x = 3,758,379,977,599.87 - Step 5: Solve for x
x = 3,758,379,977,599.87/2,128,192.36 - Step 6: Final answer
x = 1,765,996.37
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1.5x scale
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.