Home / 407,785.18-562,516.59-378,919.21

Finding the Fourth Proportional to 407,785.18, 562,516.59 and 378,919.21

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Solution

The fourth proportional to 407,785.18, 562,516.59 and 378,919.21 is: 522,697.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,785.18 : 562,516.59 = 378,919.21 : x
  2. Step 2: Convert to fraction form
    407,785.18/562,516.59 = 378,919.21/x
  3. Step 3: Cross multiply
    407,785.18x = 562,516.59 × 378,919.21
  4. Step 4: Simplify right side
    407,785.18x = 213,148,340,000.10
  5. Step 5: Solve for x
    x = 213,148,340,000.10/407,785.18
  6. Step 6: Final answer
    x = 522,697.61

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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.