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Finding the Fourth Proportional to 637,934.70, 879,960.60 and 379,638.48

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Solution

The fourth proportional to 637,934.70, 879,960.60 and 379,638.48 is: 523,669.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,934.70 : 879,960.60 = 379,638.48 : x
  2. Step 2: Convert to fraction form
    637,934.70/879,960.60 = 379,638.48/x
  3. Step 3: Cross multiply
    637,934.70x = 879,960.60 × 379,638.48
  4. Step 4: Simplify right side
    637,934.70x = 334,066,904,643.89
  5. Step 5: Solve for x
    x = 334,066,904,643.89/637,934.70
  6. Step 6: Final answer
    x = 523,669.44

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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.