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Finding the Fourth Proportional to 679,251.94, 938,189.78 and 495,199.04

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Solution

The fourth proportional to 679,251.94, 938,189.78 and 495,199.04 is: 683,974.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,251.94 : 938,189.78 = 495,199.04 : x
  2. Step 2: Convert to fraction form
    679,251.94/938,189.78 = 495,199.04/x
  3. Step 3: Cross multiply
    679,251.94x = 938,189.78 × 495,199.04
  4. Step 4: Simplify right side
    679,251.94x = 464,590,674,940.86
  5. Step 5: Solve for x
    x = 464,590,674,940.86/679,251.94
  6. Step 6: Final answer
    x = 683,974.02

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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.