Home / 455,623.83-628,758.38-251,688.78

Finding the Fourth Proportional to 455,623.83, 628,758.38 and 251,688.78

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Solution

The fourth proportional to 455,623.83, 628,758.38 and 251,688.78 is: 347,329.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,623.83 : 628,758.38 = 251,688.78 : x
  2. Step 2: Convert to fraction form
    455,623.83/628,758.38 = 251,688.78/x
  3. Step 3: Cross multiply
    455,623.83x = 628,758.38 × 251,688.78
  4. Step 4: Simplify right side
    455,623.83x = 158,251,430,206.20
  5. Step 5: Solve for x
    x = 158,251,430,206.20/455,623.83
  6. Step 6: Final answer
    x = 347,329.13

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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.