Home / 628,839.20-867,769.50-342,358.67

Finding the Fourth Proportional to 628,839.20, 867,769.50 and 342,358.67

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Solution

The fourth proportional to 628,839.20, 867,769.50 and 342,358.67 is: 472,439.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,839.20 : 867,769.50 = 342,358.67 : x
  2. Step 2: Convert to fraction form
    628,839.20/867,769.50 = 342,358.67/x
  3. Step 3: Cross multiply
    628,839.20x = 867,769.50 × 342,358.67
  4. Step 4: Simplify right side
    628,839.20x = 297,088,405,835.92
  5. Step 5: Solve for x
    x = 297,088,405,835.92/628,839.20
  6. Step 6: Final answer
    x = 472,439.39

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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.