Finding the Fourth Proportional to 621,435.84, 857,723.04 and 439,959.12
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Solution
The fourth proportional to 621,435.84, 857,723.04 and 439,959.12 is: 607,243.82
Step by Step Solution
- Step 1: Write the proportion equation
621,435.84 : 857,723.04 = 439,959.12 : x - Step 2: Convert to fraction form
621,435.84/857,723.04 = 439,959.12/x - Step 3: Cross multiply
621,435.84x = 857,723.04 × 439,959.12 - Step 4: Simplify right side
621,435.84x = 377,363,073,882.13 - Step 5: Solve for x
x = 377,363,073,882.13/621,435.84 - Step 6: Final answer
x = 607,243.82
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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.