Finding the Fourth Proportional to 3,415,479.90, 4,715,536.14 and 2,128,211.70
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Solution
The fourth proportional to 3,415,479.90, 4,715,536.14 and 2,128,211.70 is: 2,938,286.71
Step by Step Solution
- Step 1: Write the proportion equation
3,415,479.90 : 4,715,536.14 = 2,128,211.70 : x - Step 2: Convert to fraction form
3,415,479.90/4,715,536.14 = 2,128,211.70/x - Step 3: Cross multiply
3,415,479.90x = 4,715,536.14 × 2,128,211.70 - Step 4: Simplify right side
3,415,479.90x = 10,035,659,184,920.84 - Step 5: Solve for x
x = 10,035,659,184,920.84/3,415,479.90 - Step 6: Final answer
x = 2,938,286.71
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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.