Home / 1,287,758.24-1,930,454.76-445,721.12

Finding the Fourth Proportional to 1,287,758.24, 1,930,454.76 and 445,721.12

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Solution

The fourth proportional to 1,287,758.24, 1,930,454.76 and 445,721.12 is: 668,172.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,758.24 : 1,930,454.76 = 445,721.12 : x
  2. Step 2: Convert to fraction form
    1,287,758.24/1,930,454.76 = 445,721.12/x
  3. Step 3: Cross multiply
    1,287,758.24x = 1,930,454.76 × 445,721.12
  4. Step 4: Simplify right side
    1,287,758.24x = 860,444,457,736.53
  5. Step 5: Solve for x
    x = 860,444,457,736.53/1,287,758.24
  6. Step 6: Final answer
    x = 668,172.36

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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.