Finding the Fourth Proportional to 711,412,881.28, 981,852,879.99 and 409,939,538.56
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Solution
The fourth proportional to 711,412,881.28, 981,852,879.99 and 409,939,538.56 is: 565,775,975.03
Step by Step Solution
- Step 1: Write the proportion equation
711,412,881.28 : 981,852,879.99 = 409,939,538.56 : x - Step 2: Convert to fraction form
711,412,881.28/981,852,879.99 = 409,939,538.56/x - Step 3: Cross multiply
711,412,881.28x = 981,852,879.99 × 409,939,538.56 - Step 4: Simplify right side
711,412,881.28x = 402,500,316,555,990,272 - Step 5: Solve for x
x = 402,500,316,555,990,272/711,412,881.28 - Step 6: Final answer
x = 565,775,975.03
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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.