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Finding the Fourth Proportional to 1,978,948.41, 2,730,954.07 and 1,073,530.41

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Solution

The fourth proportional to 1,978,948.41, 2,730,954.07 and 1,073,530.41 is: 1,481,474.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,948.41 : 2,730,954.07 = 1,073,530.41 : x
  2. Step 2: Convert to fraction form
    1,978,948.41/2,730,954.07 = 1,073,530.41/x
  3. Step 3: Cross multiply
    1,978,948.41x = 2,730,954.07 × 1,073,530.41
  4. Step 4: Simplify right side
    1,978,948.41x = 2,931,762,239,774.44
  5. Step 5: Solve for x
    x = 2,931,762,239,774.44/1,978,948.41
  6. Step 6: Final answer
    x = 1,481,474.82

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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.