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Finding the Fourth Proportional to 659,291.90, 989,103.66 and 304,556.90

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Solution

The fourth proportional to 659,291.90, 989,103.66 and 304,556.90 is: 456,911.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,291.90 : 989,103.66 = 304,556.90 : x
  2. Step 2: Convert to fraction form
    659,291.90/989,103.66 = 304,556.90/x
  3. Step 3: Cross multiply
    659,291.90x = 989,103.66 × 304,556.90
  4. Step 4: Simplify right side
    659,291.90x = 301,238,344,468.25
  5. Step 5: Solve for x
    x = 301,238,344,468.25/659,291.90
  6. Step 6: Final answer
    x = 456,911.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.