Home / 689,727.24-951,823.38-387,921

Finding the Fourth Proportional to 689,727.24, 951,823.38 and 387,921

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Solution

The fourth proportional to 689,727.24, 951,823.38 and 387,921 is: 535,330.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,727.24 : 951,823.38 = 387,921 : x
  2. Step 2: Convert to fraction form
    689,727.24/951,823.38 = 387,921/x
  3. Step 3: Cross multiply
    689,727.24x = 951,823.38 × 387,921
  4. Step 4: Simplify right side
    689,727.24x = 369,232,277,392.98
  5. Step 5: Solve for x
    x = 369,232,277,392.98/689,727.24
  6. Step 6: Final answer
    x = 535,330.86

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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.