Home / 1,034,511,981.76-1,550,420,605.68-420,378,237.28

Finding the Fourth Proportional to 1,034,511,981.76, 1,550,420,605.68 and 420,378,237.28

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Solution

The fourth proportional to 1,034,511,981.76, 1,550,420,605.68 and 420,378,237.28 is: 630,019,847.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,034,511,981.76 : 1,550,420,605.68 = 420,378,237.28 : x
  2. Step 2: Convert to fraction form
    1,034,511,981.76/1,550,420,605.68 = 420,378,237.28/x
  3. Step 3: Cross multiply
    1,034,511,981.76x = 1,550,420,605.68 × 420,378,237.28
  4. Step 4: Simplify right side
    1,034,511,981.76x = 651,763,081,261,069,568
  5. Step 5: Solve for x
    x = 651,763,081,261,069,568/1,034,511,981.76
  6. Step 6: Final answer
    x = 630,019,847.77

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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.