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Finding the Fourth Proportional to 555,515.96, 766,659.14 and 313,842.84

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Solution

The fourth proportional to 555,515.96, 766,659.14 and 313,842.84 is: 433,129.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,515.96 : 766,659.14 = 313,842.84 : x
  2. Step 2: Convert to fraction form
    555,515.96/766,659.14 = 313,842.84/x
  3. Step 3: Cross multiply
    555,515.96x = 766,659.14 × 313,842.84
  4. Step 4: Simplify right side
    555,515.96x = 240,610,481,809.56
  5. Step 5: Solve for x
    x = 240,610,481,809.56/555,515.96
  6. Step 6: Final answer
    x = 433,129.74

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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.