Home / 1,217,964,387.65-1,680,598,868.82-709,410,797.33

Finding the Fourth Proportional to 1,217,964,387.65, 1,680,598,868.82 and 709,410,797.33

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Solution

The fourth proportional to 1,217,964,387.65, 1,680,598,868.82 and 709,410,797.33 is: 978,875,076.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,964,387.65 : 1,680,598,868.82 = 709,410,797.33 : x
  2. Step 2: Convert to fraction form
    1,217,964,387.65/1,680,598,868.82 = 709,410,797.33/x
  3. Step 3: Cross multiply
    1,217,964,387.65x = 1,680,598,868.82 × 709,410,797.33
  4. Step 4: Simplify right side
    1,217,964,387.65x = 1,192,234,983,510,464,512
  5. Step 5: Solve for x
    x = 1,192,234,983,510,464,512/1,217,964,387.65
  6. Step 6: Final answer
    x = 978,875,076.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.