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Finding the Fourth Proportional to 555,007.75, 765,910.38 and 313,292.41

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Solution

The fourth proportional to 555,007.75, 765,910.38 and 313,292.41 is: 432,343.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,007.75 : 765,910.38 = 313,292.41 : x
  2. Step 2: Convert to fraction form
    555,007.75/765,910.38 = 313,292.41/x
  3. Step 3: Cross multiply
    555,007.75x = 765,910.38 × 313,292.41
  4. Step 4: Simplify right side
    555,007.75x = 239,953,908,054.29
  5. Step 5: Solve for x
    x = 239,953,908,054.29/555,007.75
  6. Step 6: Final answer
    x = 432,343.35

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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.