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Finding the Fourth Proportional to 633,419.33, 874,118.78 and 346,949.66

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Solution

The fourth proportional to 633,419.33, 874,118.78 and 346,949.66 is: 478,790.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,419.33 : 874,118.78 = 346,949.66 : x
  2. Step 2: Convert to fraction form
    633,419.33/874,118.78 = 346,949.66/x
  3. Step 3: Cross multiply
    633,419.33x = 874,118.78 × 346,949.66
  4. Step 4: Simplify right side
    633,419.33x = 303,275,207,415.27
  5. Step 5: Solve for x
    x = 303,275,207,415.27/633,419.33
  6. Step 6: Final answer
    x = 478,790.58

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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.