Home / 1,171,448,915.16-1,616,595,066.60-642,821,745.84

Finding the Fourth Proportional to 1,171,448,915.16, 1,616,595,066.60 and 642,821,745.84

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Solution

The fourth proportional to 1,171,448,915.16, 1,616,595,066.60 and 642,821,745.84 is: 887,091,574.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171,448,915.16 : 1,616,595,066.60 = 642,821,745.84 : x
  2. Step 2: Convert to fraction form
    1,171,448,915.16/1,616,595,066.60 = 642,821,745.84/x
  3. Step 3: Cross multiply
    1,171,448,915.16x = 1,616,595,066.60 × 642,821,745.84
  4. Step 4: Simplify right side
    1,171,448,915.16x = 1,039,182,463,028,143,104
  5. Step 5: Solve for x
    x = 1,039,182,463,028,143,104/1,171,448,915.16
  6. Step 6: Final answer
    x = 887,091,574.87

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Double scale
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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.