Finding the Fourth Proportional to 621,368.07, 857,479.79 and 349,435.88
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Solution
The fourth proportional to 621,368.07, 857,479.79 and 349,435.88 is: 482,216.92
Step by Step Solution
- Step 1: Write the proportion equation
621,368.07 : 857,479.79 = 349,435.88 : x - Step 2: Convert to fraction form
621,368.07/857,479.79 = 349,435.88/x - Step 3: Cross multiply
621,368.07x = 857,479.79 × 349,435.88 - Step 4: Simplify right side
621,368.07x = 299,634,198,966.29 - Step 5: Solve for x
x = 299,634,198,966.29/621,368.07 - Step 6: Final answer
x = 482,216.92
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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.