Home / 1,216,959,065.16-1,815,206,857.64-1,105,238,951.68

Finding the Fourth Proportional to 1,216,959,065.16, 1,815,206,857.64 and 1,105,238,951.68

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Solution

The fourth proportional to 1,216,959,065.16, 1,815,206,857.64 and 1,105,238,951.68 is: 1,648,565,988.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,959,065.16 : 1,815,206,857.64 = 1,105,238,951.68 : x
  2. Step 2: Convert to fraction form
    1,216,959,065.16/1,815,206,857.64 = 1,105,238,951.68/x
  3. Step 3: Cross multiply
    1,216,959,065.16x = 1,815,206,857.64 × 1,105,238,951.68
  4. Step 4: Simplify right side
    1,216,959,065.16x = 2,006,237,324,420,380,928
  5. Step 5: Solve for x
    x = 2,006,237,324,420,380,928/1,216,959,065.16
  6. Step 6: Final answer
    x = 1,648,565,988.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.