Home / 812,508,695.44-1,217,011,910.42-548,742,826.51

Finding the Fourth Proportional to 812,508,695.44, 1,217,011,910.42 and 548,742,826.51

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Solution

The fourth proportional to 812,508,695.44, 1,217,011,910.42 and 548,742,826.51 is: 821,931,579.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,508,695.44 : 1,217,011,910.42 = 548,742,826.51 : x
  2. Step 2: Convert to fraction form
    812,508,695.44/1,217,011,910.42 = 548,742,826.51/x
  3. Step 3: Cross multiply
    812,508,695.44x = 1,217,011,910.42 × 548,742,826.51
  4. Step 4: Simplify right side
    812,508,695.44x = 667,826,555,618,535,040
  5. Step 5: Solve for x
    x = 667,826,555,618,535,040/812,508,695.44
  6. Step 6: Final answer
    x = 821,931,579.77

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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.