Home / 979,664,390.64-1,469,498,607.72-919,802,876.40

Finding the Fourth Proportional to 979,664,390.64, 1,469,498,607.72 and 919,802,876.40

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Solution

The fourth proportional to 979,664,390.64, 1,469,498,607.72 and 919,802,876.40 is: 1,379,706,212.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,664,390.64 : 1,469,498,607.72 = 919,802,876.40 : x
  2. Step 2: Convert to fraction form
    979,664,390.64/1,469,498,607.72 = 919,802,876.40/x
  3. Step 3: Cross multiply
    979,664,390.64x = 1,469,498,607.72 × 919,802,876.40
  4. Step 4: Simplify right side
    979,664,390.64x = 1,351,649,046,246,651,136
  5. Step 5: Solve for x
    x = 1,351,649,046,246,651,136/979,664,390.64
  6. Step 6: Final answer
    x = 1,379,706,212.82

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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.