Home / 455,623.71-628,758.21-251,688.66

Finding the Fourth Proportional to 455,623.71, 628,758.21 and 251,688.66

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Solution

The fourth proportional to 455,623.71, 628,758.21 and 251,688.66 is: 347,328.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,623.71 : 628,758.21 = 251,688.66 : x
  2. Step 2: Convert to fraction form
    455,623.71/628,758.21 = 251,688.66/x
  3. Step 3: Cross multiply
    455,623.71x = 628,758.21 × 251,688.66
  4. Step 4: Simplify right side
    455,623.71x = 158,251,308,195.11
  5. Step 5: Solve for x
    x = 158,251,308,195.11/455,623.71
  6. Step 6: Final answer
    x = 347,328.96

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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.