Finding the Fourth Proportional to 711,387.08, 981,745.62 and 409,678.28
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Solution
The fourth proportional to 711,387.08, 981,745.62 and 409,678.28 is: 565,374.14
Step by Step Solution
- Step 1: Write the proportion equation
711,387.08 : 981,745.62 = 409,678.28 : x - Step 2: Convert to fraction form
711,387.08/981,745.62 = 409,678.28/x - Step 3: Cross multiply
711,387.08x = 981,745.62 × 409,678.28 - Step 4: Simplify right side
711,387.08x = 402,199,856,999.13 - Step 5: Solve for x
x = 402,199,856,999.13/711,387.08 - Step 6: Final answer
x = 565,374.14
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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.