Home / 1,288,945.71-1,933,421.09-479,507.61

Finding the Fourth Proportional to 1,288,945.71, 1,933,421.09 and 479,507.61

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Solution

The fourth proportional to 1,288,945.71, 1,933,421.09 and 479,507.61 is: 719,262.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,945.71 : 1,933,421.09 = 479,507.61 : x
  2. Step 2: Convert to fraction form
    1,288,945.71/1,933,421.09 = 479,507.61/x
  3. Step 3: Cross multiply
    1,288,945.71x = 1,933,421.09 × 479,507.61
  4. Step 4: Simplify right side
    1,288,945.71x = 927,090,125,989.50
  5. Step 5: Solve for x
    x = 927,090,125,989.50/1,288,945.71
  6. Step 6: Final answer
    x = 719,262.36

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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.