Finding the Fourth Proportional to 2,165,178.62, 2,987,613.65 and 1,247,228.48
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Solution
The fourth proportional to 2,165,178.62, 2,987,613.65 and 1,247,228.48 is: 1,720,983.56
Step by Step Solution
- Step 1: Write the proportion equation
2,165,178.62 : 2,987,613.65 = 1,247,228.48 : x - Step 2: Convert to fraction form
2,165,178.62/2,987,613.65 = 1,247,228.48/x - Step 3: Cross multiply
2,165,178.62x = 2,987,613.65 × 1,247,228.48 - Step 4: Simplify right side
2,165,178.62x = 3,726,236,810,342.54 - Step 5: Solve for x
x = 3,726,236,810,342.54/2,165,178.62 - Step 6: Final answer
x = 1,720,983.56
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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.