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Finding the Fourth Proportional to 554,578.58, 765,325.88 and 312,860.41

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Solution

The fourth proportional to 554,578.58, 765,325.88 and 312,860.41 is: 431,751.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,578.58 : 765,325.88 = 312,860.41 : x
  2. Step 2: Convert to fraction form
    554,578.58/765,325.88 = 312,860.41/x
  3. Step 3: Cross multiply
    554,578.58x = 765,325.88 × 312,860.41
  4. Step 4: Simplify right side
    554,578.58x = 239,440,168,600.41
  5. Step 5: Solve for x
    x = 239,440,168,600.41/554,578.58
  6. Step 6: Final answer
    x = 431,751.56

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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.