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Finding the Fourth Proportional to 404,789.22, 606,239.24 and 319,980.06

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Solution

The fourth proportional to 404,789.22, 606,239.24 and 319,980.06 is: 479,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,789.22 : 606,239.24 = 319,980.06 : x
  2. Step 2: Convert to fraction form
    404,789.22/606,239.24 = 319,980.06/x
  3. Step 3: Cross multiply
    404,789.22x = 606,239.24 × 319,980.06
  4. Step 4: Simplify right side
    404,789.22x = 193,984,466,789.65
  5. Step 5: Solve for x
    x = 193,984,466,789.65/404,789.22
  6. Step 6: Final answer
    x = 479,223.40

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1.5x scale

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.