Home / 426,893,295.78-640,377,754.47-120,188,065.86

Finding the Fourth Proportional to 426,893,295.78, 640,377,754.47 and 120,188,065.86

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Solution

The fourth proportional to 426,893,295.78, 640,377,754.47 and 120,188,065.86 is: 180,292,744.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,893,295.78 : 640,377,754.47 = 120,188,065.86 : x
  2. Step 2: Convert to fraction form
    426,893,295.78/640,377,754.47 = 120,188,065.86/x
  3. Step 3: Cross multiply
    426,893,295.78x = 640,377,754.47 × 120,188,065.86
  4. Step 4: Simplify right side
    426,893,295.78x = 76,965,763,729,519,280
  5. Step 5: Solve for x
    x = 76,965,763,729,519,280/426,893,295.78
  6. Step 6: Final answer
    x = 180,292,744.09

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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.