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Finding the Fourth Proportional to 496,775.90, 685,567.30 and 279,022.88

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Solution

The fourth proportional to 496,775.90, 685,567.30 and 279,022.88 is: 385,060.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,775.90 : 685,567.30 = 279,022.88 : x
  2. Step 2: Convert to fraction form
    496,775.90/685,567.30 = 279,022.88/x
  3. Step 3: Cross multiply
    496,775.90x = 685,567.30 × 279,022.88
  4. Step 4: Simplify right side
    496,775.90x = 191,288,962,479.82
  5. Step 5: Solve for x
    x = 191,288,962,479.82/496,775.90
  6. Step 6: Final answer
    x = 385,060.87

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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.