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Finding the Fourth Proportional to 500,493.90, 690,750.30 and 306,867.36

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Solution

The fourth proportional to 500,493.90, 690,750.30 and 306,867.36 is: 423,519.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,493.90 : 690,750.30 = 306,867.36 : x
  2. Step 2: Convert to fraction form
    500,493.90/690,750.30 = 306,867.36/x
  3. Step 3: Cross multiply
    500,493.90x = 690,750.30 × 306,867.36
  4. Step 4: Simplify right side
    500,493.90x = 211,968,720,980.21
  5. Step 5: Solve for x
    x = 211,968,720,980.21/500,493.90
  6. Step 6: Final answer
    x = 423,519.09

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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.