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Finding the Fourth Proportional to 555,354.09, 766,389.20 and 300,704.67

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Solution

The fourth proportional to 555,354.09, 766,389.20 and 300,704.67 is: 414,972.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,354.09 : 766,389.20 = 300,704.67 : x
  2. Step 2: Convert to fraction form
    555,354.09/766,389.20 = 300,704.67/x
  3. Step 3: Cross multiply
    555,354.09x = 766,389.20 × 300,704.67
  4. Step 4: Simplify right side
    555,354.09x = 230,456,809,974.04
  5. Step 5: Solve for x
    x = 230,456,809,974.04/555,354.09
  6. Step 6: Final answer
    x = 414,972.74

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1.5x scale

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.