Home / 1,272,624.66-1,909,007.46-419,661.90

Finding the Fourth Proportional to 1,272,624.66, 1,909,007.46 and 419,661.90

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Solution

The fourth proportional to 1,272,624.66, 1,909,007.46 and 419,661.90 is: 629,516.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,624.66 : 1,909,007.46 = 419,661.90 : x
  2. Step 2: Convert to fraction form
    1,272,624.66/1,909,007.46 = 419,661.90/x
  3. Step 3: Cross multiply
    1,272,624.66x = 1,909,007.46 × 419,661.90
  4. Step 4: Simplify right side
    1,272,624.66x = 801,137,697,777.77
  5. Step 5: Solve for x
    x = 801,137,697,777.77/1,272,624.66
  6. Step 6: Final answer
    x = 629,516.09

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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.