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Finding the Fourth Proportional to 554,907.02, 765,772.13 and 385,239.56

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Solution

The fourth proportional to 554,907.02, 765,772.13 and 385,239.56 is: 531,630.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,907.02 : 765,772.13 = 385,239.56 : x
  2. Step 2: Convert to fraction form
    554,907.02/765,772.13 = 385,239.56/x
  3. Step 3: Cross multiply
    554,907.02x = 765,772.13 × 385,239.56
  4. Step 4: Simplify right side
    554,907.02x = 295,005,718,421.46
  5. Step 5: Solve for x
    x = 295,005,718,421.46/554,907.02
  6. Step 6: Final answer
    x = 531,630.90

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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.