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Finding the Fourth Proportional to 654,310.91, 981,064.51 and 254,485.70

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Solution

The fourth proportional to 654,310.91, 981,064.51 and 254,485.70 is: 381,572.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,310.91 : 981,064.51 = 254,485.70 : x
  2. Step 2: Convert to fraction form
    654,310.91/981,064.51 = 254,485.70/x
  3. Step 3: Cross multiply
    654,310.91x = 981,064.51 × 254,485.70
  4. Step 4: Simplify right side
    654,310.91x = 249,666,886,709.96
  5. Step 5: Solve for x
    x = 249,666,886,709.96/654,310.91
  6. Step 6: Final answer
    x = 381,572.25

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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.