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Finding the Fourth Proportional to 725,764, 1,001,588.48 and 403,479.48

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Solution

The fourth proportional to 725,764, 1,001,588.48 and 403,479.48 is: 556,820.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,764 : 1,001,588.48 = 403,479.48 : x
  2. Step 2: Convert to fraction form
    725,764/1,001,588.48 = 403,479.48/x
  3. Step 3: Cross multiply
    725,764x = 1,001,588.48 × 403,479.48
  4. Step 4: Simplify right side
    725,764x = 404,120,399,084.39
  5. Step 5: Solve for x
    x = 404,120,399,084.39/725,764
  6. Step 6: Final answer
    x = 556,820.67

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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.