Home / 638,799.19-958,863.38-470,509.54

Finding the Fourth Proportional to 638,799.19, 958,863.38 and 470,509.54

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Solution

The fourth proportional to 638,799.19, 958,863.38 and 470,509.54 is: 706,253.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,799.19 : 958,863.38 = 470,509.54 : x
  2. Step 2: Convert to fraction form
    638,799.19/958,863.38 = 470,509.54/x
  3. Step 3: Cross multiply
    638,799.19x = 958,863.38 × 470,509.54
  4. Step 4: Simplify right side
    638,799.19x = 451,154,367,846.65
  5. Step 5: Solve for x
    x = 451,154,367,846.65/638,799.19
  6. Step 6: Final answer
    x = 706,253.82

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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.