Finding the Fourth Proportional to 1,378,539.81, 1,902,368.03 and 774,927.81
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Solution
The fourth proportional to 1,378,539.81, 1,902,368.03 and 774,927.81 is: 1,069,390.87
Step by Step Solution
- Step 1: Write the proportion equation
1,378,539.81 : 1,902,368.03 = 774,927.81 : x - Step 2: Convert to fraction form
1,378,539.81/1,902,368.03 = 774,927.81/x - Step 3: Cross multiply
1,378,539.81x = 1,902,368.03 × 774,927.81 - Step 4: Simplify right side
1,378,539.81x = 1,474,197,887,427.28 - Step 5: Solve for x
x = 1,474,197,887,427.28/1,378,539.81 - Step 6: Final answer
x = 1,069,390.87
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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.