Finding the Fourth Proportional to 1,378,541.74, 1,902,106.38 and 805,471.06
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Solution
The fourth proportional to 1,378,541.74, 1,902,106.38 and 805,471.06 is: 1,111,385.75
Step by Step Solution
- Step 1: Write the proportion equation
1,378,541.74 : 1,902,106.38 = 805,471.06 : x - Step 2: Convert to fraction form
1,378,541.74/1,902,106.38 = 805,471.06/x - Step 3: Cross multiply
1,378,541.74x = 1,902,106.38 × 805,471.06 - Step 4: Simplify right side
1,378,541.74x = 1,532,091,642,131.36 - Step 5: Solve for x
x = 1,532,091,642,131.36/1,378,541.74 - Step 6: Final answer
x = 1,111,385.75
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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.