Finding the Fourth Proportional to 628,838.91, 867,813.30 and 342,374.76
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Solution
The fourth proportional to 628,838.91, 867,813.30 and 342,374.76 is: 472,485.66
Step by Step Solution
- Step 1: Write the proportion equation
628,838.91 : 867,813.30 = 342,374.76 : x - Step 2: Convert to fraction form
628,838.91/867,813.30 = 342,374.76/x - Step 3: Cross multiply
628,838.91x = 867,813.30 × 342,374.76 - Step 4: Simplify right side
628,838.91x = 297,117,370,312.31 - Step 5: Solve for x
x = 297,117,370,312.31/628,838.91 - Step 6: Final answer
x = 472,485.66
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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.