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Finding the Fourth Proportional to 555,474.60, 766,555.38 and 313,757.64

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Solution

The fourth proportional to 555,474.60, 766,555.38 and 313,757.64 is: 432,985.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,474.60 : 766,555.38 = 313,757.64 : x
  2. Step 2: Convert to fraction form
    555,474.60/766,555.38 = 313,757.64/x
  3. Step 3: Cross multiply
    555,474.60x = 766,555.38 × 313,757.64
  4. Step 4: Simplify right side
    555,474.60x = 240,512,606,958.10
  5. Step 5: Solve for x
    x = 240,512,606,958.10/555,474.60
  6. Step 6: Final answer
    x = 432,985.79

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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.