Home / 14,340,165,433.78-19,789,447,361.88-7,909,841,207.20

Finding the Fourth Proportional to 14,340,165,433.78, 19,789,447,361.88 and 7,909,841,207.20

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Solution

The fourth proportional to 14,340,165,433.78, 19,789,447,361.88 and 7,909,841,207.20 is: 10,915,591,380.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,340,165,433.78 : 19,789,447,361.88 = 7,909,841,207.20 : x
  2. Step 2: Convert to fraction form
    14,340,165,433.78/19,789,447,361.88 = 7,909,841,207.20/x
  3. Step 3: Cross multiply
    14,340,165,433.78x = 19,789,447,361.88 × 7,909,841,207.20
  4. Step 4: Simplify right side
    14,340,165,433.78x = 156,531,386,210,713,763,840
  5. Step 5: Solve for x
    x = 156,531,386,210,713,763,840/14,340,165,433.78
  6. Step 6: Final answer
    x = 10,915,591,380.97

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.