Home / 638,834.40-957,445.20-323,378.40

Finding the Fourth Proportional to 638,834.40, 957,445.20 and 323,378.40

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Solution

The fourth proportional to 638,834.40, 957,445.20 and 323,378.40 is: 484,659.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,834.40 : 957,445.20 = 323,378.40 : x
  2. Step 2: Convert to fraction form
    638,834.40/957,445.20 = 323,378.40/x
  3. Step 3: Cross multiply
    638,834.40x = 957,445.20 × 323,378.40
  4. Step 4: Simplify right side
    638,834.40x = 309,617,096,863.68
  5. Step 5: Solve for x
    x = 309,617,096,863.68/638,834.40
  6. Step 6: Final answer
    x = 484,659.40

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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.