Home / 1,237,156,238.80-1,855,734,358.20-419,268,539.80

Finding the Fourth Proportional to 1,237,156,238.80, 1,855,734,358.20 and 419,268,539.80

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Solution

The fourth proportional to 1,237,156,238.80, 1,855,734,358.20 and 419,268,539.80 is: 628,902,809.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,237,156,238.80 : 1,855,734,358.20 = 419,268,539.80 : x
  2. Step 2: Convert to fraction form
    1,237,156,238.80/1,855,734,358.20 = 419,268,539.80/x
  3. Step 3: Cross multiply
    1,237,156,238.80x = 1,855,734,358.20 × 419,268,539.80
  4. Step 4: Simplify right side
    1,237,156,238.80x = 778,051,034,619,204,224
  5. Step 5: Solve for x
    x = 778,051,034,619,204,224/1,237,156,238.80
  6. Step 6: Final answer
    x = 628,902,809.70

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Double scale
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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.