Home / 1,305,005.64-1,956,875.59-765,438.23

Finding the Fourth Proportional to 1,305,005.64, 1,956,875.59 and 765,438.23

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Solution

The fourth proportional to 1,305,005.64, 1,956,875.59 and 765,438.23 is: 1,147,786.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,305,005.64 : 1,956,875.59 = 765,438.23 : x
  2. Step 2: Convert to fraction form
    1,305,005.64/1,956,875.59 = 765,438.23/x
  3. Step 3: Cross multiply
    1,305,005.64x = 1,956,875.59 × 765,438.23
  4. Step 4: Simplify right side
    1,305,005.64x = 1,497,867,387,939.81
  5. Step 5: Solve for x
    x = 1,497,867,387,939.81/1,305,005.64
  6. Step 6: Final answer
    x = 1,147,786.14

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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.