Finding the Fourth Proportional to 621,567.20, 857,452.21 and 392,408.48
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Solution
The fourth proportional to 621,567.20, 857,452.21 and 392,408.48 is: 541,327.66
Step by Step Solution
- Step 1: Write the proportion equation
621,567.20 : 857,452.21 = 392,408.48 : x - Step 2: Convert to fraction form
621,567.20/857,452.21 = 392,408.48/x - Step 3: Cross multiply
621,567.20x = 857,452.21 × 392,408.48 - Step 4: Simplify right side
621,567.20x = 336,471,513,130.46 - Step 5: Solve for x
x = 336,471,513,130.46/621,567.20 - Step 6: Final answer
x = 541,327.66
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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.