Home / 638,350.40-957,667.44-278,579.12

Finding the Fourth Proportional to 638,350.40, 957,667.44 and 278,579.12

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Solution

The fourth proportional to 638,350.40, 957,667.44 and 278,579.12 is: 417,930.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,350.40 : 957,667.44 = 278,579.12 : x
  2. Step 2: Convert to fraction form
    638,350.40/957,667.44 = 278,579.12/x
  3. Step 3: Cross multiply
    638,350.40x = 957,667.44 × 278,579.12
  4. Step 4: Simplify right side
    638,350.40x = 266,786,152,687.85
  5. Step 5: Solve for x
    x = 266,786,152,687.85/638,350.40
  6. Step 6: Final answer
    x = 417,930.58

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1.5x scale

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.