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Finding the Fourth Proportional to 637,380.55, 879,648.69 and 475,955.34

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Solution

The fourth proportional to 637,380.55, 879,648.69 and 475,955.34 is: 656,865.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,380.55 : 879,648.69 = 475,955.34 : x
  2. Step 2: Convert to fraction form
    637,380.55/879,648.69 = 475,955.34/x
  3. Step 3: Cross multiply
    637,380.55x = 879,648.69 × 475,955.34
  4. Step 4: Simplify right side
    637,380.55x = 418,673,494,763.68
  5. Step 5: Solve for x
    x = 418,673,494,763.68/637,380.55
  6. Step 6: Final answer
    x = 656,865.82

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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.