Finding the Fourth Proportional to 518,698.19, 777,860.05 and 219,201.91
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Solution
The fourth proportional to 518,698.19, 777,860.05 and 219,201.91 is: 328,723.74
Step by Step Solution
- Step 1: Write the proportion equation
518,698.19 : 777,860.05 = 219,201.91 : x - Step 2: Convert to fraction form
518,698.19/777,860.05 = 219,201.91/x - Step 3: Cross multiply
518,698.19x = 777,860.05 × 219,201.91 - Step 4: Simplify right side
518,698.19x = 170,508,408,672.70 - Step 5: Solve for x
x = 170,508,408,672.70/518,698.19 - Step 6: Final answer
x = 328,723.74
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.