Home / 829,719.27-1,145,123.60-485,660.43

Finding the Fourth Proportional to 829,719.27, 1,145,123.60 and 485,660.43

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Solution

The fourth proportional to 829,719.27, 1,145,123.60 and 485,660.43 is: 670,276.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,719.27 : 1,145,123.60 = 485,660.43 : x
  2. Step 2: Convert to fraction form
    829,719.27/1,145,123.60 = 485,660.43/x
  3. Step 3: Cross multiply
    829,719.27x = 1,145,123.60 × 485,660.43
  4. Step 4: Simplify right side
    829,719.27x = 556,141,217,550.85
  5. Step 5: Solve for x
    x = 556,141,217,550.85/829,719.27
  6. Step 6: Final answer
    x = 670,276.37

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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.