Home / 672,785.92-1,009,206.42-313,291.72

Finding the Fourth Proportional to 672,785.92, 1,009,206.42 and 313,291.72

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Solution

The fourth proportional to 672,785.92, 1,009,206.42 and 313,291.72 is: 469,950.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,785.92 : 1,009,206.42 = 313,291.72 : x
  2. Step 2: Convert to fraction form
    672,785.92/1,009,206.42 = 313,291.72/x
  3. Step 3: Cross multiply
    672,785.92x = 1,009,206.42 × 313,291.72
  4. Step 4: Simplify right side
    672,785.92x = 316,176,015,156.84
  5. Step 5: Solve for x
    x = 316,176,015,156.84/672,785.92
  6. Step 6: Final answer
    x = 469,950.40

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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.