Finding the Fourth Proportional to 2,168,542.49, 2,992,606.20 and 1,201,688.91
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Solution
The fourth proportional to 2,168,542.49, 2,992,606.20 and 1,201,688.91 is: 1,658,340.43
Step by Step Solution
- Step 1: Write the proportion equation
2,168,542.49 : 2,992,606.20 = 1,201,688.91 : x - Step 2: Convert to fraction form
2,168,542.49/2,992,606.20 = 1,201,688.91/x - Step 3: Cross multiply
2,168,542.49x = 2,992,606.20 × 1,201,688.91 - Step 4: Simplify right side
2,168,542.49x = 3,596,181,682,537.24 - Step 5: Solve for x
x = 3,596,181,682,537.24/2,168,542.49 - Step 6: Final answer
x = 1,658,340.43
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1.5x scale
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.