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Finding the Fourth Proportional to 502,500.35, 693,559.85 and 309,074.31

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Solution

The fourth proportional to 502,500.35, 693,559.85 and 309,074.31 is: 426,589.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,500.35 : 693,559.85 = 309,074.31 : x
  2. Step 2: Convert to fraction form
    502,500.35/693,559.85 = 309,074.31/x
  3. Step 3: Cross multiply
    502,500.35x = 693,559.85 × 309,074.31
  4. Step 4: Simplify right side
    502,500.35x = 214,361,528,614.65
  5. Step 5: Solve for x
    x = 214,361,528,614.65/502,500.35
  6. Step 6: Final answer
    x = 426,589.81

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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.