Home / 1,272,869.13-1,909,538.56-419,999.73

Finding the Fourth Proportional to 1,272,869.13, 1,909,538.56 and 419,999.73

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Solution

The fourth proportional to 1,272,869.13, 1,909,538.56 and 419,999.73 is: 630,077.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,869.13 : 1,909,538.56 = 419,999.73 : x
  2. Step 2: Convert to fraction form
    1,272,869.13/1,909,538.56 = 419,999.73/x
  3. Step 3: Cross multiply
    1,272,869.13x = 1,909,538.56 × 419,999.73
  4. Step 4: Simplify right side
    1,272,869.13x = 802,005,679,624.59
  5. Step 5: Solve for x
    x = 802,005,679,624.59/1,272,869.13
  6. Step 6: Final answer
    x = 630,077.09

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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.