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Finding the Fourth Proportional to 555,628.55, 766,767.33 and 300,979.67

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Solution

The fourth proportional to 555,628.55, 766,767.33 and 300,979.67 is: 415,351.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,628.55 : 766,767.33 = 300,979.67 : x
  2. Step 2: Convert to fraction form
    555,628.55/766,767.33 = 300,979.67/x
  3. Step 3: Cross multiply
    555,628.55x = 766,767.33 × 300,979.67
  4. Step 4: Simplify right side
    555,628.55x = 230,781,374,116.34
  5. Step 5: Solve for x
    x = 230,781,374,116.34/555,628.55
  6. Step 6: Final answer
    x = 415,351.90

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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.