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Finding the Fourth Proportional to 1,311,907.77, 1,965,946.82 and 581,549.85

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Solution

The fourth proportional to 1,311,907.77, 1,965,946.82 and 581,549.85 is: 871,475.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,907.77 : 1,965,946.82 = 581,549.85 : x
  2. Step 2: Convert to fraction form
    1,311,907.77/1,965,946.82 = 581,549.85/x
  3. Step 3: Cross multiply
    1,311,907.77x = 1,965,946.82 × 581,549.85
  4. Step 4: Simplify right side
    1,311,907.77x = 1,143,296,075,371.23
  5. Step 5: Solve for x
    x = 1,143,296,075,371.23/1,311,907.77
  6. Step 6: Final answer
    x = 871,475.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.