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Finding the Fourth Proportional to 492,771.30, 679,983.66 and 277,964.16

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Solution

The fourth proportional to 492,771.30, 679,983.66 and 277,964.16 is: 383,567.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,771.30 : 679,983.66 = 277,964.16 : x
  2. Step 2: Convert to fraction form
    492,771.30/679,983.66 = 277,964.16/x
  3. Step 3: Cross multiply
    492,771.30x = 679,983.66 × 277,964.16
  4. Step 4: Simplify right side
    492,771.30x = 189,011,084,315.69
  5. Step 5: Solve for x
    x = 189,011,084,315.69/492,771.30
  6. Step 6: Final answer
    x = 383,567.56

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1.5x scale

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.