Finding the Fourth Proportional to 1,378,112.76, 1,902,315.24 and 805,339.08
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Solution
The fourth proportional to 1,378,112.76, 1,902,315.24 and 805,339.08 is: 1,111,671.59
Step by Step Solution
- Step 1: Write the proportion equation
1,378,112.76 : 1,902,315.24 = 805,339.08 : x - Step 2: Convert to fraction form
1,378,112.76/1,902,315.24 = 805,339.08/x - Step 3: Cross multiply
1,378,112.76x = 1,902,315.24 × 805,339.08 - Step 4: Simplify right side
1,378,112.76x = 1,532,008,805,251.58 - Step 5: Solve for x
x = 1,532,008,805,251.58/1,378,112.76 - Step 6: Final answer
x = 1,111,671.59
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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.