Finding the Fourth Proportional to 628,638.67, 867,520.71 and 342,158.08
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Solution
The fourth proportional to 628,638.67, 867,520.71 and 342,158.08 is: 472,177.79
Step by Step Solution
- Step 1: Write the proportion equation
628,638.67 : 867,520.71 = 342,158.08 : x - Step 2: Convert to fraction form
628,638.67/867,520.71 = 342,158.08/x - Step 3: Cross multiply
628,638.67x = 867,520.71 × 342,158.08 - Step 4: Simplify right side
628,638.67x = 296,829,217,339.98 - Step 5: Solve for x
x = 296,829,217,339.98/628,638.67 - Step 6: Final answer
x = 472,177.79
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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.