Home / 455,128.58-628,056.16-261,400.03

Finding the Fourth Proportional to 455,128.58, 628,056.16 and 261,400.03

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Solution

The fourth proportional to 455,128.58, 628,056.16 and 261,400.03 is: 360,719.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,128.58 : 628,056.16 = 261,400.03 : x
  2. Step 2: Convert to fraction form
    455,128.58/628,056.16 = 261,400.03/x
  3. Step 3: Cross multiply
    455,128.58x = 628,056.16 × 261,400.03
  4. Step 4: Simplify right side
    455,128.58x = 164,173,896,842.04
  5. Step 5: Solve for x
    x = 164,173,896,842.04/455,128.58
  6. Step 6: Final answer
    x = 360,719.81

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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.