Home / 1,288,616,113.49-1,778,240,177.87-787,663,662.41

Finding the Fourth Proportional to 1,288,616,113.49, 1,778,240,177.87 and 787,663,662.41

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Solution

The fourth proportional to 1,288,616,113.49, 1,778,240,177.87 and 787,663,662.41 is: 1,086,945,255.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,616,113.49 : 1,778,240,177.87 = 787,663,662.41 : x
  2. Step 2: Convert to fraction form
    1,288,616,113.49/1,778,240,177.87 = 787,663,662.41/x
  3. Step 3: Cross multiply
    1,288,616,113.49x = 1,778,240,177.87 × 787,663,662.41
  4. Step 4: Simplify right side
    1,288,616,113.49x = 1,400,655,171,141,755,648
  5. Step 5: Solve for x
    x = 1,400,655,171,141,755,648/1,288,616,113.49
  6. Step 6: Final answer
    x = 1,086,945,255.83

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1.5x scale

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.