Home / 1,011,638,301.78-1,395,287,887.99-870,745,485.09

Finding the Fourth Proportional to 1,011,638,301.78, 1,395,287,887.99 and 870,745,485.09

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Solution

The fourth proportional to 1,011,638,301.78, 1,395,287,887.99 and 870,745,485.09 is: 1,200,963,453.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011,638,301.78 : 1,395,287,887.99 = 870,745,485.09 : x
  2. Step 2: Convert to fraction form
    1,011,638,301.78/1,395,287,887.99 = 870,745,485.09/x
  3. Step 3: Cross multiply
    1,011,638,301.78x = 1,395,287,887.99 × 870,745,485.09
  4. Step 4: Simplify right side
    1,011,638,301.78x = 1,214,940,628,868,054,272
  5. Step 5: Solve for x
    x = 1,214,940,628,868,054,272/1,011,638,301.78
  6. Step 6: Final answer
    x = 1,200,963,453.77

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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.