Home / 455,816.76-628,618.50-379,588.26

Finding the Fourth Proportional to 455,816.76, 628,618.50 and 379,588.26

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Solution

The fourth proportional to 455,816.76, 628,618.50 and 379,588.26 is: 523,491.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,816.76 : 628,618.50 = 379,588.26 : x
  2. Step 2: Convert to fraction form
    455,816.76/628,618.50 = 379,588.26/x
  3. Step 3: Cross multiply
    455,816.76x = 628,618.50 × 379,588.26
  4. Step 4: Simplify right side
    455,816.76x = 238,616,202,618.81
  5. Step 5: Solve for x
    x = 238,616,202,618.81/455,816.76
  6. Step 6: Final answer
    x = 523,491.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.