Home / 812,508,696.44-1,217,011,911.92-548,742,827.51

Finding the Fourth Proportional to 812,508,696.44, 1,217,011,911.92 and 548,742,827.51

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Solution

The fourth proportional to 812,508,696.44, 1,217,011,911.92 and 548,742,827.51 is: 821,931,581.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,508,696.44 : 1,217,011,911.92 = 548,742,827.51 : x
  2. Step 2: Convert to fraction form
    812,508,696.44/1,217,011,911.92 = 548,742,827.51/x
  3. Step 3: Cross multiply
    812,508,696.44x = 1,217,011,911.92 × 548,742,827.51
  4. Step 4: Simplify right side
    812,508,696.44x = 667,826,557,660,331,904
  5. Step 5: Solve for x
    x = 667,826,557,660,331,904/812,508,696.44
  6. Step 6: Final answer
    x = 821,931,581.27

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Double scale
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1.5x scale

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.