Home / 689,742.36-951,835.29-387,936.36

Finding the Fourth Proportional to 689,742.36, 951,835.29 and 387,936.36

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Solution

The fourth proportional to 689,742.36, 951,835.29 and 387,936.36 is: 535,347.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,742.36 : 951,835.29 = 387,936.36 : x
  2. Step 2: Convert to fraction form
    689,742.36/951,835.29 = 387,936.36/x
  3. Step 3: Cross multiply
    689,742.36x = 951,835.29 × 387,936.36
  4. Step 4: Simplify right side
    689,742.36x = 369,251,517,722.14
  5. Step 5: Solve for x
    x = 369,251,517,722.14/689,742.36
  6. Step 6: Final answer
    x = 535,347.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.