Home / 1,260,781,004.80-1,891,171,507.20-442,893,305.80

Finding the Fourth Proportional to 1,260,781,004.80, 1,891,171,507.20 and 442,893,305.80

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Solution

The fourth proportional to 1,260,781,004.80, 1,891,171,507.20 and 442,893,305.80 is: 664,339,958.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,781,004.80 : 1,891,171,507.20 = 442,893,305.80 : x
  2. Step 2: Convert to fraction form
    1,260,781,004.80/1,891,171,507.20 = 442,893,305.80/x
  3. Step 3: Cross multiply
    1,260,781,004.80x = 1,891,171,507.20 × 442,893,305.80
  4. Step 4: Simplify right side
    1,260,781,004.80x = 837,587,200,658,576,512
  5. Step 5: Solve for x
    x = 837,587,200,658,576,512/1,260,781,004.80
  6. Step 6: Final answer
    x = 664,339,958.70

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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.