Home / 783,430.20-1,175,140.08-378,149.36

Finding the Fourth Proportional to 783,430.20, 1,175,140.08 and 378,149.36

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Solution

The fourth proportional to 783,430.20, 1,175,140.08 and 378,149.36 is: 567,221.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,430.20 : 1,175,140.08 = 378,149.36 : x
  2. Step 2: Convert to fraction form
    783,430.20/1,175,140.08 = 378,149.36/x
  3. Step 3: Cross multiply
    783,430.20x = 1,175,140.08 × 378,149.36
  4. Step 4: Simplify right side
    783,430.20x = 444,378,463,286.65
  5. Step 5: Solve for x
    x = 444,378,463,286.65/783,430.20
  6. Step 6: Final answer
    x = 567,221.51

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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.