Home / 486,416.40-729,624.60-131,485.20

Finding the Fourth Proportional to 486,416.40, 729,624.60 and 131,485.20

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Solution

The fourth proportional to 486,416.40, 729,624.60 and 131,485.20 is: 197,227.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,416.40 : 729,624.60 = 131,485.20 : x
  2. Step 2: Convert to fraction form
    486,416.40/729,624.60 = 131,485.20/x
  3. Step 3: Cross multiply
    486,416.40x = 729,624.60 × 131,485.20
  4. Step 4: Simplify right side
    486,416.40x = 95,934,836,455.92
  5. Step 5: Solve for x
    x = 95,934,836,455.92/486,416.40
  6. Step 6: Final answer
    x = 197,227.80

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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.