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Finding the Fourth Proportional to 502,485.54, 693,149.37 and 308,758.69

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Solution

The fourth proportional to 502,485.54, 693,149.37 and 308,758.69 is: 425,914.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,485.54 : 693,149.37 = 308,758.69 : x
  2. Step 2: Convert to fraction form
    502,485.54/693,149.37 = 308,758.69/x
  3. Step 3: Cross multiply
    502,485.54x = 693,149.37 × 308,758.69
  4. Step 4: Simplify right side
    502,485.54x = 214,015,889,870.30
  5. Step 5: Solve for x
    x = 214,015,889,870.30/502,485.54
  6. Step 6: Final answer
    x = 425,914.53

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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.