Home / 770,817,660.20-1,155,843,911.10-279,511,317.80

Finding the Fourth Proportional to 770,817,660.20, 1,155,843,911.10 and 279,511,317.80

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Solution

The fourth proportional to 770,817,660.20, 1,155,843,911.10 and 279,511,317.80 is: 419,128,247.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,817,660.20 : 1,155,843,911.10 = 279,511,317.80 : x
  2. Step 2: Convert to fraction form
    770,817,660.20/1,155,843,911.10 = 279,511,317.80/x
  3. Step 3: Cross multiply
    770,817,660.20x = 1,155,843,911.10 × 279,511,317.80
  4. Step 4: Simplify right side
    770,817,660.20x = 323,071,454,762,667,008
  5. Step 5: Solve for x
    x = 323,071,454,762,667,008/770,817,660.20
  6. Step 6: Final answer
    x = 419,128,247.11

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1.5x scale

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.