Home / 12,591,387,930.40-18,887,081,895.60-5,226,607,693.60

Finding the Fourth Proportional to 12,591,387,930.40, 18,887,081,895.60 and 5,226,607,693.60

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Solution

The fourth proportional to 12,591,387,930.40, 18,887,081,895.60 and 5,226,607,693.60 is: 7,839,911,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591,387,930.40 : 18,887,081,895.60 = 5,226,607,693.60 : x
  2. Step 2: Convert to fraction form
    12,591,387,930.40/18,887,081,895.60 = 5,226,607,693.60/x
  3. Step 3: Cross multiply
    12,591,387,930.40x = 18,887,081,895.60 × 5,226,607,693.60
  4. Step 4: Simplify right side
    12,591,387,930.40x = 98,715,367,545,196,232,704
  5. Step 5: Solve for x
    x = 98,715,367,545,196,232,704/12,591,387,930.40
  6. Step 6: Final answer
    x = 7,839,911,540.40

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Double scale
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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.