Home / 457,179.10-631,215.43-285,358.79

Finding the Fourth Proportional to 457,179.10, 631,215.43 and 285,358.79

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Solution

The fourth proportional to 457,179.10, 631,215.43 and 285,358.79 is: 393,987.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,179.10 : 631,215.43 = 285,358.79 : x
  2. Step 2: Convert to fraction form
    457,179.10/631,215.43 = 285,358.79/x
  3. Step 3: Cross multiply
    457,179.10x = 631,215.43 × 285,358.79
  4. Step 4: Simplify right side
    457,179.10x = 180,122,872,198.77
  5. Step 5: Solve for x
    x = 180,122,872,198.77/457,179.10
  6. Step 6: Final answer
    x = 393,987.55

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1.5x scale

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.