Home / 512,785,765.12-768,641,169.92-189,463,417.60

Finding the Fourth Proportional to 512,785,765.12, 768,641,169.92 and 189,463,417.60

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Solution

The fourth proportional to 512,785,765.12, 768,641,169.92 and 189,463,417.60 is: 283,996,539.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,785,765.12 : 768,641,169.92 = 189,463,417.60 : x
  2. Step 2: Convert to fraction form
    512,785,765.12/768,641,169.92 = 189,463,417.60/x
  3. Step 3: Cross multiply
    512,785,765.12x = 768,641,169.92 × 189,463,417.60
  4. Step 4: Simplify right side
    512,785,765.12x = 145,629,382,961,105,504
  5. Step 5: Solve for x
    x = 145,629,382,961,105,504/512,785,765.12
  6. Step 6: Final answer
    x = 283,996,539.82

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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.