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Finding the Fourth Proportional to 555,423.96, 766,487.40 and 300,775.34

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Solution

The fourth proportional to 555,423.96, 766,487.40 and 300,775.34 is: 415,071.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,423.96 : 766,487.40 = 300,775.34 : x
  2. Step 2: Convert to fraction form
    555,423.96/766,487.40 = 300,775.34/x
  3. Step 3: Cross multiply
    555,423.96x = 766,487.40 × 300,775.34
  4. Step 4: Simplify right side
    555,423.96x = 230,540,508,340.72
  5. Step 5: Solve for x
    x = 230,540,508,340.72/555,423.96
  6. Step 6: Final answer
    x = 415,071.23

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.