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Finding the Fourth Proportional to 512,659.32, 768,320.11 and 370,981.81

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Solution

The fourth proportional to 512,659.32, 768,320.11 and 370,981.81 is: 555,988.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,659.32 : 768,320.11 = 370,981.81 : x
  2. Step 2: Convert to fraction form
    512,659.32/768,320.11 = 370,981.81/x
  3. Step 3: Cross multiply
    512,659.32x = 768,320.11 × 370,981.81
  4. Step 4: Simplify right side
    512,659.32x = 285,032,785,067.20
  5. Step 5: Solve for x
    x = 285,032,785,067.20/512,659.32
  6. Step 6: Final answer
    x = 555,988.69

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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.