Home / 486,945.30-729,921.15-329,189.70

Finding the Fourth Proportional to 486,945.30, 729,921.15 and 329,189.70

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Solution

The fourth proportional to 486,945.30, 729,921.15 and 329,189.70 is: 493,448.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,945.30 : 729,921.15 = 329,189.70 : x
  2. Step 2: Convert to fraction form
    486,945.30/729,921.15 = 329,189.70/x
  3. Step 3: Cross multiply
    486,945.30x = 729,921.15 × 329,189.70
  4. Step 4: Simplify right side
    486,945.30x = 240,282,524,392.16
  5. Step 5: Solve for x
    x = 240,282,524,392.16/486,945.30
  6. Step 6: Final answer
    x = 493,448.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.