Home / 1,188,785.90-1,783,174.47-430,450.01

Finding the Fourth Proportional to 1,188,785.90, 1,783,174.47 and 430,450.01

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Solution

The fourth proportional to 1,188,785.90, 1,783,174.47 and 430,450.01 is: 645,673.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,785.90 : 1,783,174.47 = 430,450.01 : x
  2. Step 2: Convert to fraction form
    1,188,785.90/1,783,174.47 = 430,450.01/x
  3. Step 3: Cross multiply
    1,188,785.90x = 1,783,174.47 × 430,450.01
  4. Step 4: Simplify right side
    1,188,785.90x = 767,567,478,262.37
  5. Step 5: Solve for x
    x = 767,567,478,262.37/1,188,785.90
  6. Step 6: Final answer
    x = 645,673.44

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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.