Home / 1,272,964.74-1,909,038.72-419,844.60

Finding the Fourth Proportional to 1,272,964.74, 1,909,038.72 and 419,844.60

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Solution

The fourth proportional to 1,272,964.74, 1,909,038.72 and 419,844.60 is: 629,632.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,964.74 : 1,909,038.72 = 419,844.60 : x
  2. Step 2: Convert to fraction form
    1,272,964.74/1,909,038.72 = 419,844.60/x
  3. Step 3: Cross multiply
    1,272,964.74x = 1,909,038.72 × 419,844.60
  4. Step 4: Simplify right side
    1,272,964.74x = 801,499,597,782.91
  5. Step 5: Solve for x
    x = 801,499,597,782.91/1,272,964.74
  6. Step 6: Final answer
    x = 629,632.21

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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.