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Finding the Fourth Proportional to 1,687,392,756.60, 2,356,907,903.40 and 1,687,392,756.60

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Solution

The fourth proportional to 1,687,392,756.60, 2,356,907,903.40 and 1,687,392,756.60 is: 2,356,907,903.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687,392,756.60 : 2,356,907,903.40 = 1,687,392,756.60 : x
  2. Step 2: Convert to fraction form
    1,687,392,756.60/2,356,907,903.40 = 1,687,392,756.60/x
  3. Step 3: Cross multiply
    1,687,392,756.60x = 2,356,907,903.40 × 1,687,392,756.60
  4. Step 4: Simplify right side
    1,687,392,756.60x = 3,977,029,324,170,452,480
  5. Step 5: Solve for x
    x = 3,977,029,324,170,452,480/1,687,392,756.60
  6. Step 6: Final answer
    x = 2,356,907,903.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.