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Finding the Fourth Proportional to 1,438,974.04, 1,985,732.14 and 794,380.40

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Solution

The fourth proportional to 1,438,974.04, 1,985,732.14 and 794,380.40 is: 1,096,216.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,974.04 : 1,985,732.14 = 794,380.40 : x
  2. Step 2: Convert to fraction form
    1,438,974.04/1,985,732.14 = 794,380.40/x
  3. Step 3: Cross multiply
    1,438,974.04x = 1,985,732.14 × 794,380.40
  4. Step 4: Simplify right side
    1,438,974.04x = 1,577,426,677,765.49
  5. Step 5: Solve for x
    x = 1,577,426,677,765.49/1,438,974.04
  6. Step 6: Final answer
    x = 1,096,216.22

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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.