Finding the Fourth Proportional to 2,166,318.09, 2,989,612.26 and 1,199,448.23
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Solution
The fourth proportional to 2,166,318.09, 2,989,612.26 and 1,199,448.23 is: 1,655,290.21
Step by Step Solution
- Step 1: Write the proportion equation
2,166,318.09 : 2,989,612.26 = 1,199,448.23 : x - Step 2: Convert to fraction form
2,166,318.09/2,989,612.26 = 1,199,448.23/x - Step 3: Cross multiply
2,166,318.09x = 2,989,612.26 × 1,199,448.23 - Step 4: Simplify right side
2,166,318.09x = 3,585,885,118,695.24 - Step 5: Solve for x
x = 3,585,885,118,695.24/2,166,318.09 - Step 6: Final answer
x = 1,655,290.21
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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.