Finding the Fourth Proportional to 621,824.36, 858,041.32 and 392,295.08
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Solution
The fourth proportional to 621,824.36, 858,041.32 and 392,295.08 is: 541,319.08
Step by Step Solution
- Step 1: Write the proportion equation
621,824.36 : 858,041.32 = 392,295.08 : x - Step 2: Convert to fraction form
621,824.36/858,041.32 = 392,295.08/x - Step 3: Cross multiply
621,824.36x = 858,041.32 × 392,295.08 - Step 4: Simplify right side
621,824.36x = 336,605,388,272.71 - Step 5: Solve for x
x = 336,605,388,272.71/621,824.36 - Step 6: Final answer
x = 541,319.08
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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.