Finding the Fourth Proportional to 1,393,051.84, 1,922,433.56 and 781,340.65
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Solution
The fourth proportional to 1,393,051.84, 1,922,433.56 and 781,340.65 is: 1,078,262.45
Step by Step Solution
- Step 1: Write the proportion equation
1,393,051.84 : 1,922,433.56 = 781,340.65 : x - Step 2: Convert to fraction form
1,393,051.84/1,922,433.56 = 781,340.65/x - Step 3: Cross multiply
1,393,051.84x = 1,922,433.56 × 781,340.65 - Step 4: Simplify right side
1,393,051.84x = 1,502,075,487,352.21 - Step 5: Solve for x
x = 1,502,075,487,352.21/1,393,051.84 - Step 6: Final answer
x = 1,078,262.45
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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.