Finding the Fourth Proportional to 3,251,829.60, 4,488,271.20 and 2,164,147.20
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Solution
The fourth proportional to 3,251,829.60, 4,488,271.20 and 2,164,147.20 is: 2,987,019.85
Step by Step Solution
- Step 1: Write the proportion equation
3,251,829.60 : 4,488,271.20 = 2,164,147.20 : x - Step 2: Convert to fraction form
3,251,829.60/4,488,271.20 = 2,164,147.20/x - Step 3: Cross multiply
3,251,829.60x = 4,488,271.20 × 2,164,147.20 - Step 4: Simplify right side
3,251,829.60x = 9,713,279,550,320.64 - Step 5: Solve for x
x = 9,713,279,550,320.64/3,251,829.60 - Step 6: Final answer
x = 2,987,019.85
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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.