Finding the Fourth Proportional to 9,121,439.09, 12,587,587.11 and 4,991,471.13
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Solution
The fourth proportional to 9,121,439.09, 12,587,587.11 and 4,991,471.13 is: 6,888,230.80
Step by Step Solution
- Step 1: Write the proportion equation
9,121,439.09 : 12,587,587.11 = 4,991,471.13 : x - Step 2: Convert to fraction form
9,121,439.09/12,587,587.11 = 4,991,471.13/x - Step 3: Cross multiply
9,121,439.09x = 12,587,587.11 × 4,991,471.13 - Step 4: Simplify right side
9,121,439.09x = 62,830,577,655,925.13 - Step 5: Solve for x
x = 62,830,577,655,925.13/9,121,439.09 - Step 6: Final answer
x = 6,888,230.80
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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.