Home / 485,288.15-669,506.72-324,248.40

Finding the Fourth Proportional to 485,288.15, 669,506.72 and 324,248.40

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Solution

The fourth proportional to 485,288.15, 669,506.72 and 324,248.40 is: 447,335.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,288.15 : 669,506.72 = 324,248.40 : x
  2. Step 2: Convert to fraction form
    485,288.15/669,506.72 = 324,248.40/x
  3. Step 3: Cross multiply
    485,288.15x = 669,506.72 × 324,248.40
  4. Step 4: Simplify right side
    485,288.15x = 217,086,481,128.01
  5. Step 5: Solve for x
    x = 217,086,481,128.01/485,288.15
  6. Step 6: Final answer
    x = 447,335.22

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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.