Finding the Fourth Proportional to 1,293,672,489.23, 1,785,268,035.12 and 736,807,351.79
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Solution
The fourth proportional to 1,293,672,489.23, 1,785,268,035.12 and 736,807,351.79 is: 1,016,794,145.46
Step by Step Solution
- Step 1: Write the proportion equation
1,293,672,489.23 : 1,785,268,035.12 = 736,807,351.79 : x - Step 2: Convert to fraction form
1,293,672,489.23/1,785,268,035.12 = 736,807,351.79/x - Step 3: Cross multiply
1,293,672,489.23x = 1,785,268,035.12 × 736,807,351.79 - Step 4: Simplify right side
1,293,672,489.23x = 1,315,398,613,192,103,680 - Step 5: Solve for x
x = 1,315,398,613,192,103,680/1,293,672,489.23 - Step 6: Final answer
x = 1,016,794,145.46
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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.