Home / 867,721.41-1,302,421.71-418,758.33

Finding the Fourth Proportional to 867,721.41, 1,302,421.71 and 418,758.33

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Solution

The fourth proportional to 867,721.41, 1,302,421.71 and 418,758.33 is: 628,542.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,721.41 : 1,302,421.71 = 418,758.33 : x
  2. Step 2: Convert to fraction form
    867,721.41/1,302,421.71 = 418,758.33/x
  3. Step 3: Cross multiply
    867,721.41x = 1,302,421.71 × 418,758.33
  4. Step 4: Simplify right side
    867,721.41x = 545,399,940,235.34
  5. Step 5: Solve for x
    x = 545,399,940,235.34/867,721.41
  6. Step 6: Final answer
    x = 628,542.68

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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.