Home / 486,029.28-729,990.06-396,138.45

Finding the Fourth Proportional to 486,029.28, 729,990.06 and 396,138.45

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Solution

The fourth proportional to 486,029.28, 729,990.06 and 396,138.45 is: 594,978.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,029.28 : 729,990.06 = 396,138.45 : x
  2. Step 2: Convert to fraction form
    486,029.28/729,990.06 = 396,138.45/x
  3. Step 3: Cross multiply
    486,029.28x = 729,990.06 × 396,138.45
  4. Step 4: Simplify right side
    486,029.28x = 289,177,130,883.81
  5. Step 5: Solve for x
    x = 289,177,130,883.81/486,029.28
  6. Step 6: Final answer
    x = 594,978.83

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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.