Home / 664,281,637.20-996,422,455.80-255,351,128.40

Finding the Fourth Proportional to 664,281,637.20, 996,422,455.80 and 255,351,128.40

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Solution

The fourth proportional to 664,281,637.20, 996,422,455.80 and 255,351,128.40 is: 383,026,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,281,637.20 : 996,422,455.80 = 255,351,128.40 : x
  2. Step 2: Convert to fraction form
    664,281,637.20/996,422,455.80 = 255,351,128.40/x
  3. Step 3: Cross multiply
    664,281,637.20x = 996,422,455.80 × 255,351,128.40
  4. Step 4: Simplify right side
    664,281,637.20x = 254,437,598,451,629,120
  5. Step 5: Solve for x
    x = 254,437,598,451,629,120/664,281,637.20
  6. Step 6: Final answer
    x = 383,026,692.60

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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.