Home / 872,015,905.20-1,308,275,800.20-258,614,893.20

Finding the Fourth Proportional to 872,015,905.20, 1,308,275,800.20 and 258,614,893.20

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Solution

The fourth proportional to 872,015,905.20, 1,308,275,800.20 and 258,614,893.20 is: 387,997,058.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,015,905.20 : 1,308,275,800.20 = 258,614,893.20 : x
  2. Step 2: Convert to fraction form
    872,015,905.20/1,308,275,800.20 = 258,614,893.20/x
  3. Step 3: Cross multiply
    872,015,905.20x = 1,308,275,800.20 × 258,614,893.20
  4. Step 4: Simplify right side
    872,015,905.20x = 338,339,606,344,867,520
  5. Step 5: Solve for x
    x = 338,339,606,344,867,520/872,015,905.20
  6. Step 6: Final answer
    x = 387,997,058.69

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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.