Finding the Fourth Proportional to 621,674.24, 857,909.12 and 349,742.32
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Solution
The fourth proportional to 621,674.24, 857,909.12 and 349,742.32 is: 482,643.65
Step by Step Solution
- Step 1: Write the proportion equation
621,674.24 : 857,909.12 = 349,742.32 : x - Step 2: Convert to fraction form
621,674.24/857,909.12 = 349,742.32/x - Step 3: Cross multiply
621,674.24x = 857,909.12 × 349,742.32 - Step 4: Simplify right side
621,674.24x = 300,047,125,977.96 - Step 5: Solve for x
x = 300,047,125,977.96/621,674.24 - Step 6: Final answer
x = 482,643.65
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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.