Finding the Fourth Proportional to 5,427,979.83, 7,490,742.30 and 2,947,305.05
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Solution
The fourth proportional to 5,427,979.83, 7,490,742.30 and 2,947,305.05 is: 4,067,351.64
Step by Step Solution
- Step 1: Write the proportion equation
5,427,979.83 : 7,490,742.30 = 2,947,305.05 : x - Step 2: Convert to fraction form
5,427,979.83/7,490,742.30 = 2,947,305.05/x - Step 3: Cross multiply
5,427,979.83x = 7,490,742.30 × 2,947,305.05 - Step 4: Simplify right side
5,427,979.83x = 22,077,502,633,784.31 - Step 5: Solve for x
x = 22,077,502,633,784.31/5,427,979.83 - Step 6: Final answer
x = 4,067,351.64
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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.