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Finding the Fourth Proportional to 1,991,538,277.60, 2,987,307,416.40 and 1,991,538,277.60

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Solution

The fourth proportional to 1,991,538,277.60, 2,987,307,416.40 and 1,991,538,277.60 is: 2,987,307,416.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,538,277.60 : 2,987,307,416.40 = 1,991,538,277.60 : x
  2. Step 2: Convert to fraction form
    1,991,538,277.60/2,987,307,416.40 = 1,991,538,277.60/x
  3. Step 3: Cross multiply
    1,991,538,277.60x = 2,987,307,416.40 × 1,991,538,277.60
  4. Step 4: Simplify right side
    1,991,538,277.60x = 5,949,337,066,718,961,664
  5. Step 5: Solve for x
    x = 5,949,337,066,718,961,664/1,991,538,277.60
  6. Step 6: Final answer
    x = 2,987,307,416.40

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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.