Home / 672,708,979,097.42-928,344,179,486.84-383,691,871,742.54

Finding the Fourth Proportional to 672,708,979,097.42, 928,344,179,486.84 and 383,691,871,742.54

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Solution

The fourth proportional to 672,708,979,097.42, 928,344,179,486.84 and 383,691,871,742.54 is: 529,498,084,485.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,708,979,097.42 : 928,344,179,486.84 = 383,691,871,742.54 : x
  2. Step 2: Convert to fraction form
    672,708,979,097.42/928,344,179,486.84 = 383,691,871,742.54/x
  3. Step 3: Cross multiply
    672,708,979,097.42x = 928,344,179,486.84 × 383,691,871,742.54
  4. Step 4: Simplify right side
    672,708,979,097.42x = 356,198,115,848,598,111,387,648
  5. Step 5: Solve for x
    x = 356,198,115,848,598,111,387,648/672,708,979,097.42
  6. Step 6: Final answer
    x = 529,498,084,485.97

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Double scale
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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.