Home / 555,138.12-766,087.56-313,418.46

Finding the Fourth Proportional to 555,138.12, 766,087.56 and 313,418.46

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Solution

The fourth proportional to 555,138.12, 766,087.56 and 313,418.46 is: 432,515.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,138.12 : 766,087.56 = 313,418.46 : x
  2. Step 2: Convert to fraction form
    555,138.12/766,087.56 = 313,418.46/x
  3. Step 3: Cross multiply
    555,138.12x = 766,087.56 × 313,418.46
  4. Step 4: Simplify right side
    555,138.12x = 240,105,983,280.36
  5. Step 5: Solve for x
    x = 240,105,983,280.36/555,138.12
  6. Step 6: Final answer
    x = 432,515.76

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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.