Home / 2,643,378,438.51-3,964,636,716.91-777,587,785.61

Finding the Fourth Proportional to 2,643,378,438.51, 3,964,636,716.91 and 777,587,785.61

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Solution

The fourth proportional to 2,643,378,438.51, 3,964,636,716.91 and 777,587,785.61 is: 1,166,254,910.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643,378,438.51 : 3,964,636,716.91 = 777,587,785.61 : x
  2. Step 2: Convert to fraction form
    2,643,378,438.51/3,964,636,716.91 = 777,587,785.61/x
  3. Step 3: Cross multiply
    2,643,378,438.51x = 3,964,636,716.91 × 777,587,785.61
  4. Step 4: Simplify right side
    2,643,378,438.51x = 3,082,853,085,428,457,984
  5. Step 5: Solve for x
    x = 3,082,853,085,428,457,984/2,643,378,438.51
  6. Step 6: Final answer
    x = 1,166,254,910.96

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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.