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Finding the Fourth Proportional to 655,894.32, 905,136.04 and 380,305.58

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Solution

The fourth proportional to 655,894.32, 905,136.04 and 380,305.58 is: 524,822.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,894.32 : 905,136.04 = 380,305.58 : x
  2. Step 2: Convert to fraction form
    655,894.32/905,136.04 = 380,305.58/x
  3. Step 3: Cross multiply
    655,894.32x = 905,136.04 × 380,305.58
  4. Step 4: Simplify right side
    655,894.32x = 344,228,286,671.10
  5. Step 5: Solve for x
    x = 344,228,286,671.10/655,894.32
  6. Step 6: Final answer
    x = 524,822.79

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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.