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Finding the Fourth Proportional to 500,005.44, 689,288.94 and 356,516.64

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Solution

The fourth proportional to 500,005.44, 689,288.94 and 356,516.64 is: 491,480.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,005.44 : 689,288.94 = 356,516.64 : x
  2. Step 2: Convert to fraction form
    500,005.44/689,288.94 = 356,516.64/x
  3. Step 3: Cross multiply
    500,005.44x = 689,288.94 × 356,516.64
  4. Step 4: Simplify right side
    500,005.44x = 245,742,976,877.96
  5. Step 5: Solve for x
    x = 245,742,976,877.96/500,005.44
  6. Step 6: Final answer
    x = 491,480.61

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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.