Home / 1,278,434,703.36-1,917,707,867.28-405,100,431.84

Finding the Fourth Proportional to 1,278,434,703.36, 1,917,707,867.28 and 405,100,431.84

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Solution

The fourth proportional to 1,278,434,703.36, 1,917,707,867.28 and 405,100,431.84 is: 607,668,333.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,434,703.36 : 1,917,707,867.28 = 405,100,431.84 : x
  2. Step 2: Convert to fraction form
    1,278,434,703.36/1,917,707,867.28 = 405,100,431.84/x
  3. Step 3: Cross multiply
    1,278,434,703.36x = 1,917,707,867.28 × 405,100,431.84
  4. Step 4: Simplify right side
    1,278,434,703.36x = 776,864,285,178,093,312
  5. Step 5: Solve for x
    x = 776,864,285,178,093,312/1,278,434,703.36
  6. Step 6: Final answer
    x = 607,668,333.11

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Double scale
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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.