Home / 696,531,439.92-961,184,568.48-378,992,992.86

Finding the Fourth Proportional to 696,531,439.92, 961,184,568.48 and 378,992,992.86

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Solution

The fourth proportional to 696,531,439.92, 961,184,568.48 and 378,992,992.86 is: 522,994,649.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,531,439.92 : 961,184,568.48 = 378,992,992.86 : x
  2. Step 2: Convert to fraction form
    696,531,439.92/961,184,568.48 = 378,992,992.86/x
  3. Step 3: Cross multiply
    696,531,439.92x = 961,184,568.48 × 378,992,992.86
  4. Step 4: Simplify right side
    696,531,439.92x = 364,282,216,299,082,816
  5. Step 5: Solve for x
    x = 364,282,216,299,082,816/696,531,439.92
  6. Step 6: Final answer
    x = 522,994,649.52

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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.