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Finding the Fourth Proportional to 654,646.81, 903,448.34 and 368,183.83

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Solution

The fourth proportional to 654,646.81, 903,448.34 and 368,183.83 is: 508,113.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,646.81 : 903,448.34 = 368,183.83 : x
  2. Step 2: Convert to fraction form
    654,646.81/903,448.34 = 368,183.83/x
  3. Step 3: Cross multiply
    654,646.81x = 903,448.34 × 368,183.83
  4. Step 4: Simplify right side
    654,646.81x = 332,635,070,028.34
  5. Step 5: Solve for x
    x = 332,635,070,028.34/654,646.81
  6. Step 6: Final answer
    x = 508,113.79

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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.