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Finding the Fourth Proportional to 521,571.65, 782,357.48 and 486,579.65

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Solution

The fourth proportional to 521,571.65, 782,357.48 and 486,579.65 is: 729,869.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,571.65 : 782,357.48 = 486,579.65 : x
  2. Step 2: Convert to fraction form
    521,571.65/782,357.48 = 486,579.65/x
  3. Step 3: Cross multiply
    521,571.65x = 782,357.48 × 486,579.65
  4. Step 4: Simplify right side
    521,571.65x = 380,679,226,360.38
  5. Step 5: Solve for x
    x = 380,679,226,360.38/521,571.65
  6. Step 6: Final answer
    x = 729,869.48

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.