Finding the Fourth Proportional to 1,126,149.12, 1,553,653.44 and 642,741.12
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Solution
The fourth proportional to 1,126,149.12, 1,553,653.44 and 642,741.12 is: 886,735.99
Step by Step Solution
- Step 1: Write the proportion equation
1,126,149.12 : 1,553,653.44 = 642,741.12 : x - Step 2: Convert to fraction form
1,126,149.12/1,553,653.44 = 642,741.12/x - Step 3: Cross multiply
1,126,149.12x = 1,553,653.44 × 642,741.12 - Step 4: Simplify right side
1,126,149.12x = 998,596,952,117.45 - Step 5: Solve for x
x = 998,596,952,117.45/1,126,149.12 - Step 6: Final answer
x = 886,735.99
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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.