Home / 673,390.25-929,438.11-387,076.71

Finding the Fourth Proportional to 673,390.25, 929,438.11 and 387,076.71

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Solution

The fourth proportional to 673,390.25, 929,438.11 and 387,076.71 is: 534,257.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,390.25 : 929,438.11 = 387,076.71 : x
  2. Step 2: Convert to fraction form
    673,390.25/929,438.11 = 387,076.71/x
  3. Step 3: Cross multiply
    673,390.25x = 929,438.11 × 387,076.71
  4. Step 4: Simplify right side
    673,390.25x = 359,763,845,767.42
  5. Step 5: Solve for x
    x = 359,763,845,767.42/673,390.25
  6. Step 6: Final answer
    x = 534,257.58

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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.