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Finding the Fourth Proportional to 554,475.94, 765,175.89 and 312,757.76

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Solution

The fourth proportional to 554,475.94, 765,175.89 and 312,757.76 is: 431,605.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,475.94 : 765,175.89 = 312,757.76 : x
  2. Step 2: Convert to fraction form
    554,475.94/765,175.89 = 312,757.76/x
  3. Step 3: Cross multiply
    554,475.94x = 765,175.89 × 312,757.76
  4. Step 4: Simplify right side
    554,475.94x = 239,314,697,362.41
  5. Step 5: Solve for x
    x = 239,314,697,362.41/554,475.94
  6. Step 6: Final answer
    x = 431,605.20

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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.