Finding the Fourth Proportional to 621,442.94, 857,584.06 and 349,509.74
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Solution
The fourth proportional to 621,442.94, 857,584.06 and 349,509.74 is: 482,319.39
Step by Step Solution
- Step 1: Write the proportion equation
621,442.94 : 857,584.06 = 349,509.74 : x - Step 2: Convert to fraction form
621,442.94/857,584.06 = 349,509.74/x - Step 3: Cross multiply
621,442.94x = 857,584.06 × 349,509.74 - Step 4: Simplify right side
621,442.94x = 299,733,976,677.05 - Step 5: Solve for x
x = 299,733,976,677.05/621,442.94 - Step 6: Final answer
x = 482,319.39
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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.