Finding the Fourth Proportional to 875,301,103.81, 1,207,911,912.02 and 473,415,301.09
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Solution
The fourth proportional to 875,301,103.81, 1,207,911,912.02 and 473,415,301.09 is: 653,311,162.33
Step by Step Solution
- Step 1: Write the proportion equation
875,301,103.81 : 1,207,911,912.02 = 473,415,301.09 : x - Step 2: Convert to fraction form
875,301,103.81/1,207,911,912.02 = 473,415,301.09/x - Step 3: Cross multiply
875,301,103.81x = 1,207,911,912.02 × 473,415,301.09 - Step 4: Simplify right side
875,301,103.81x = 571,843,981,522,738,816 - Step 5: Solve for x
x = 571,843,981,522,738,816/875,301,103.81 - Step 6: Final answer
x = 653,311,162.33
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Double scale
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Similar ratio
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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.