Home / 784,003.60-1,174,450.20-428,496.40

Finding the Fourth Proportional to 784,003.60, 1,174,450.20 and 428,496.40

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Solution

The fourth proportional to 784,003.60, 1,174,450.20 and 428,496.40 is: 641,894.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,003.60 : 1,174,450.20 = 428,496.40 : x
  2. Step 2: Convert to fraction form
    784,003.60/1,174,450.20 = 428,496.40/x
  3. Step 3: Cross multiply
    784,003.60x = 1,174,450.20 × 428,496.40
  4. Step 4: Simplify right side
    784,003.60x = 503,247,682,679.28
  5. Step 5: Solve for x
    x = 503,247,682,679.28/784,003.60
  6. Step 6: Final answer
    x = 641,894.61

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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.