Finding the Fourth Proportional to 1,277,907.84, 1,763,198.28 and 781,065.99
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Solution
The fourth proportional to 1,277,907.84, 1,763,198.28 and 781,065.99 is: 1,077,678.82
Step by Step Solution
- Step 1: Write the proportion equation
1,277,907.84 : 1,763,198.28 = 781,065.99 : x - Step 2: Convert to fraction form
1,277,907.84/1,763,198.28 = 781,065.99/x - Step 3: Cross multiply
1,277,907.84x = 1,763,198.28 × 781,065.99 - Step 4: Simplify right side
1,277,907.84x = 1,377,174,210,134.50 - Step 5: Solve for x
x = 1,377,174,210,134.50/1,277,907.84 - Step 6: Final answer
x = 1,077,678.82
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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.