Finding the Fourth Proportional to 620,134.20, 930,201.30 and 578,143.80
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Solution
The fourth proportional to 620,134.20, 930,201.30 and 578,143.80 is: 867,215.70
Step by Step Solution
- Step 1: Write the proportion equation
620,134.20 : 930,201.30 = 578,143.80 : x - Step 2: Convert to fraction form
620,134.20/930,201.30 = 578,143.80/x - Step 3: Cross multiply
620,134.20x = 930,201.30 × 578,143.80 - Step 4: Simplify right side
620,134.20x = 537,790,114,346.94 - Step 5: Solve for x
x = 537,790,114,346.94/620,134.20 - Step 6: Final answer
x = 867,215.70
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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.