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Finding the Fourth Proportional to 555,778.71, 766,975.32 and 301,129.92

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Solution

The fourth proportional to 555,778.71, 766,975.32 and 301,129.92 is: 415,559.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,778.71 : 766,975.32 = 301,129.92 : x
  2. Step 2: Convert to fraction form
    555,778.71/766,975.32 = 301,129.92/x
  3. Step 3: Cross multiply
    555,778.71x = 766,975.32 × 301,129.92
  4. Step 4: Simplify right side
    555,778.71x = 230,959,216,753.57
  5. Step 5: Solve for x
    x = 230,959,216,753.57/555,778.71
  6. Step 6: Final answer
    x = 415,559.67

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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.