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Finding the Fourth Proportional to 555,579.74, 766,700.06 and 300,930.92

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Solution

The fourth proportional to 555,579.74, 766,700.06 and 300,930.92 is: 415,284.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,579.74 : 766,700.06 = 300,930.92 : x
  2. Step 2: Convert to fraction form
    555,579.74/766,700.06 = 300,930.92/x
  3. Step 3: Cross multiply
    555,579.74x = 766,700.06 × 300,930.92
  4. Step 4: Simplify right side
    555,579.74x = 230,723,749,081.70
  5. Step 5: Solve for x
    x = 230,723,749,081.70/555,579.74
  6. Step 6: Final answer
    x = 415,284.67

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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.