Home / 1,179,810,871.43-1,628,142,289.64-643,967,374.82

Finding the Fourth Proportional to 1,179,810,871.43, 1,628,142,289.64 and 643,967,374.82

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Solution

The fourth proportional to 1,179,810,871.43, 1,628,142,289.64 and 643,967,374.82 is: 888,676,771.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,810,871.43 : 1,628,142,289.64 = 643,967,374.82 : x
  2. Step 2: Convert to fraction form
    1,179,810,871.43/1,628,142,289.64 = 643,967,374.82/x
  3. Step 3: Cross multiply
    1,179,810,871.43x = 1,628,142,289.64 × 643,967,374.82
  4. Step 4: Simplify right side
    1,179,810,871.43x = 1,048,470,516,092,894,976
  5. Step 5: Solve for x
    x = 1,048,470,516,092,894,976/1,179,810,871.43
  6. Step 6: Final answer
    x = 888,676,771.41

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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.