Finding the Fourth Proportional to 1,243,693.28, 1,865,539.92 and 345,135.08
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Solution
The fourth proportional to 1,243,693.28, 1,865,539.92 and 345,135.08 is: 517,702.62
Step by Step Solution
- Step 1: Write the proportion equation
1,243,693.28 : 1,865,539.92 = 345,135.08 : x - Step 2: Convert to fraction form
1,243,693.28/1,865,539.92 = 345,135.08/x - Step 3: Cross multiply
1,243,693.28x = 1,865,539.92 × 345,135.08 - Step 4: Simplify right side
1,243,693.28x = 643,863,269,532.39 - Step 5: Solve for x
x = 643,863,269,532.39/1,243,693.28 - Step 6: Final answer
x = 517,702.62
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.