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Finding the Fourth Proportional to 555,054.58, 765,905.97 and 313,307.38

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Solution

The fourth proportional to 555,054.58, 765,905.97 and 313,307.38 is: 432,325.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,054.58 : 765,905.97 = 313,307.38 : x
  2. Step 2: Convert to fraction form
    555,054.58/765,905.97 = 313,307.38/x
  3. Step 3: Cross multiply
    555,054.58x = 765,905.97 × 313,307.38
  4. Step 4: Simplify right side
    555,054.58x = 239,963,992,787.06
  5. Step 5: Solve for x
    x = 239,963,992,787.06/555,054.58
  6. Step 6: Final answer
    x = 432,325.04

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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.