Home / 759,721.38-1,139,075.87-418,325.61

Finding the Fourth Proportional to 759,721.38, 1,139,075.87 and 418,325.61

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Solution

The fourth proportional to 759,721.38, 1,139,075.87 and 418,325.61 is: 627,209.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,721.38 : 1,139,075.87 = 418,325.61 : x
  2. Step 2: Convert to fraction form
    759,721.38/1,139,075.87 = 418,325.61/x
  3. Step 3: Cross multiply
    759,721.38x = 1,139,075.87 × 418,325.61
  4. Step 4: Simplify right side
    759,721.38x = 476,504,610,333.94
  5. Step 5: Solve for x
    x = 476,504,610,333.94/759,721.38
  6. Step 6: Final answer
    x = 627,209.69

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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.