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Finding the Fourth Proportional to 500,493.33, 690,749.52 and 306,866.80

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Solution

The fourth proportional to 500,493.33, 690,749.52 and 306,866.80 is: 423,518.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,493.33 : 690,749.52 = 306,866.80 : x
  2. Step 2: Convert to fraction form
    500,493.33/690,749.52 = 306,866.80/x
  3. Step 3: Cross multiply
    500,493.33x = 690,749.52 × 306,866.80
  4. Step 4: Simplify right side
    500,493.33x = 211,968,094,516.62
  5. Step 5: Solve for x
    x = 211,968,094,516.62/500,493.33
  6. Step 6: Final answer
    x = 423,518.32

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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.