Home / 672,749.62-928,619.44-400,902.76

Finding the Fourth Proportional to 672,749.62, 928,619.44 and 400,902.76

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Solution

The fourth proportional to 672,749.62, 928,619.44 and 400,902.76 is: 553,379.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,749.62 : 928,619.44 = 400,902.76 : x
  2. Step 2: Convert to fraction form
    672,749.62/928,619.44 = 400,902.76/x
  3. Step 3: Cross multiply
    672,749.62x = 928,619.44 × 400,902.76
  4. Step 4: Simplify right side
    672,749.62x = 372,286,096,485.65
  5. Step 5: Solve for x
    x = 372,286,096,485.65/672,749.62
  6. Step 6: Final answer
    x = 553,379.87

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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.