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Finding the Fourth Proportional to 938,657.04, 1,407,843 and 307,556.88

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Solution

The fourth proportional to 938,657.04, 1,407,843 and 307,556.88 is: 461,288.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,657.04 : 1,407,843 = 307,556.88 : x
  2. Step 2: Convert to fraction form
    938,657.04/1,407,843 = 307,556.88/x
  3. Step 3: Cross multiply
    938,657.04x = 1,407,843 × 307,556.88
  4. Step 4: Simplify right side
    938,657.04x = 432,991,800,609.84
  5. Step 5: Solve for x
    x = 432,991,800,609.84/938,657.04
  6. Step 6: Final answer
    x = 461,288.61

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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.