Finding the Fourth Proportional to 621,722.79, 857,977.24 and 346,074.65
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Solution
The fourth proportional to 621,722.79, 857,977.24 and 346,074.65 is: 477,582.90
Step by Step Solution
- Step 1: Write the proportion equation
621,722.79 : 857,977.24 = 346,074.65 : x - Step 2: Convert to fraction form
621,722.79/857,977.24 = 346,074.65/x - Step 3: Cross multiply
621,722.79x = 857,977.24 × 346,074.65 - Step 4: Simplify right side
621,722.79x = 296,924,171,310.59 - Step 5: Solve for x
x = 296,924,171,310.59/621,722.79 - Step 6: Final answer
x = 477,582.90
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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.