Home / 919,329,709.90-1,378,994,564.85-804,538,453.90

Finding the Fourth Proportional to 919,329,709.90, 1,378,994,564.85 and 804,538,453.90

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Solution

The fourth proportional to 919,329,709.90, 1,378,994,564.85 and 804,538,453.90 is: 1,206,807,680.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,329,709.90 : 1,378,994,564.85 = 804,538,453.90 : x
  2. Step 2: Convert to fraction form
    919,329,709.90/1,378,994,564.85 = 804,538,453.90/x
  3. Step 3: Cross multiply
    919,329,709.90x = 1,378,994,564.85 × 804,538,453.90
  4. Step 4: Simplify right side
    919,329,709.90x = 1,109,454,155,140,922,112
  5. Step 5: Solve for x
    x = 1,109,454,155,140,922,112/919,329,709.90
  6. Step 6: Final answer
    x = 1,206,807,680.85

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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.