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Finding the Fourth Proportional to 555,707.19, 766,911.20 and 340,817.97

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Solution

The fourth proportional to 555,707.19, 766,911.20 and 340,817.97 is: 470,350.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,707.19 : 766,911.20 = 340,817.97 : x
  2. Step 2: Convert to fraction form
    555,707.19/766,911.20 = 340,817.97/x
  3. Step 3: Cross multiply
    555,707.19x = 766,911.20 × 340,817.97
  4. Step 4: Simplify right side
    555,707.19x = 261,377,116,650.17
  5. Step 5: Solve for x
    x = 261,377,116,650.17/555,707.19
  6. Step 6: Final answer
    x = 470,350.43

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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.