Home / 12,880,791,830.40-19,321,187,745.60-9,784,923,619.20

Finding the Fourth Proportional to 12,880,791,830.40, 19,321,187,745.60 and 9,784,923,619.20

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Solution

The fourth proportional to 12,880,791,830.40, 19,321,187,745.60 and 9,784,923,619.20 is: 14,677,385,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880,791,830.40 : 19,321,187,745.60 = 9,784,923,619.20 : x
  2. Step 2: Convert to fraction form
    12,880,791,830.40/19,321,187,745.60 = 9,784,923,619.20/x
  3. Step 3: Cross multiply
    12,880,791,830.40x = 19,321,187,745.60 × 9,784,923,619.20
  4. Step 4: Simplify right side
    12,880,791,830.40x = 189,056,346,322,919,030,784
  5. Step 5: Solve for x
    x = 189,056,346,322,919,030,784/12,880,791,830.40
  6. Step 6: Final answer
    x = 14,677,385,428.80

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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.