Finding the Fourth Proportional to 628,785.75, 867,724.35 and 342,288.75
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Solution
The fourth proportional to 628,785.75, 867,724.35 and 342,288.75 is: 472,358.48
Step by Step Solution
- Step 1: Write the proportion equation
628,785.75 : 867,724.35 = 342,288.75 : x - Step 2: Convert to fraction form
628,785.75/867,724.35 = 342,288.75/x - Step 3: Cross multiply
628,785.75x = 867,724.35 × 342,288.75 - Step 4: Simplify right side
628,785.75x = 297,012,283,106.06 - Step 5: Solve for x
x = 297,012,283,106.06/628,785.75 - Step 6: Final answer
x = 472,358.48
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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.