Home / 1,689,251,808-2,331,305,543.72-936,800,636.16

Finding the Fourth Proportional to 1,689,251,808, 2,331,305,543.72 and 936,800,636.16

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Solution

The fourth proportional to 1,689,251,808, 2,331,305,543.72 and 936,800,636.16 is: 1,292,861,434.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689,251,808 : 2,331,305,543.72 = 936,800,636.16 : x
  2. Step 2: Convert to fraction form
    1,689,251,808/2,331,305,543.72 = 936,800,636.16/x
  3. Step 3: Cross multiply
    1,689,251,808x = 2,331,305,543.72 × 936,800,636.16
  4. Step 4: Simplify right side
    1,689,251,808x = 2,183,968,516,440,230,400
  5. Step 5: Solve for x
    x = 2,183,968,516,440,230,400/1,689,251,808
  6. Step 6: Final answer
    x = 1,292,861,434.92

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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.