Home / 1,159,835,512.40-1,739,753,268.60-643,857,477.20

Finding the Fourth Proportional to 1,159,835,512.40, 1,739,753,268.60 and 643,857,477.20

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Solution

The fourth proportional to 1,159,835,512.40, 1,739,753,268.60 and 643,857,477.20 is: 965,786,215.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159,835,512.40 : 1,739,753,268.60 = 643,857,477.20 : x
  2. Step 2: Convert to fraction form
    1,159,835,512.40/1,739,753,268.60 = 643,857,477.20/x
  3. Step 3: Cross multiply
    1,159,835,512.40x = 1,739,753,268.60 × 643,857,477.20
  4. Step 4: Simplify right side
    1,159,835,512.40x = 1,120,153,150,471,250,048
  5. Step 5: Solve for x
    x = 1,120,153,150,471,250,048/1,159,835,512.40
  6. Step 6: Final answer
    x = 965,786,215.80

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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.