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Finding the Fourth Proportional to 580,135.65, 800,574.79 and 321,997.55

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Solution

The fourth proportional to 580,135.65, 800,574.79 and 321,997.55 is: 444,349.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,135.65 : 800,574.79 = 321,997.55 : x
  2. Step 2: Convert to fraction form
    580,135.65/800,574.79 = 321,997.55/x
  3. Step 3: Cross multiply
    580,135.65x = 800,574.79 × 321,997.55
  4. Step 4: Simplify right side
    580,135.65x = 257,783,116,767.64
  5. Step 5: Solve for x
    x = 257,783,116,767.64/580,135.65
  6. Step 6: Final answer
    x = 444,349.72

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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.